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AVIRA ANTIVIR UNIX MAILGATE User Manual

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Summary of Contents for AVIRA ANTIVIR UNIX MAILGATE

  • Page 1 User Manual Avira AntiVir UNIX MailGate...

  • Page 3: Table Of Contents

    7.1 Overview..............................77 7.2 Operating AntiVir MailGate Using the GUI ................... 79 7.3 Configuring AntiVir MailGate Using the GUI ..................83 Chapter 8. Service ..................107 8.1 Support ..............................107 8.2 Online Shop............................107 8.3 Contact..............................108 Avira GmbH AntiVir MailGate...
  • Page 4 Chapter 9. Appendix ..................109 9.1 Glossary ..............................109 9.2 Further Information ..........................110 9.3 Golden Rules for Protection Against Viruses ..................111 AntiVir MailGate Avira GmbH...

  • Page 5: Chapter 1. About This Manual

    The appendix contains a Glossary, which explains the basic terms. For further information and assistance, please refer to our website, to the Hotline of our Technical Support and to our regular Newsletter (see Service – Page 107). Your Avira Team Avira GmbH AntiVir MailGate...

  • Page 6: The Structure Of The Manual

    7 Graphical User Interface General information on GUI; operation and (GUI) configuration of AntiVir MailGate using the 8 Service Avira GmbH Support and Service 9 Appendix Glossary of technical terms and abbreviations Golden Rules for protection against viruses Signs and Symbols...

  • Page 7: Abbreviations

    Frequently Asked Question FQDN Fully Qualified Domain Name General Public License Graphical User Interface MIME Multipurpose Internet Mail Extensions Mail Transport Agent Possible Malicious Software Request For Comment SMTP Simple Mail Transfer Protocol Virus Definition File Avira GmbH AntiVir MailGate...
  • Page 8 About this Manual AntiVir MailGate Avira GmbH...

  • Page 9: Chapter 2. Product Information

    An anti-virus program can only be reliable and effective if kept up to date. Ensure that you keep your AntiVir MailGate up to date using automatic updates. You will learn how to do this in this user guide. Avira GmbH AntiVir MailGate...

  • Page 10: Features

    Internet update for the scan engine and VDFs; • heuristic detection for macro viruses; • recognition of all common archive types (with configurable recursion level for nested archives); • optional: operation and configuration of AntiVir MailGate using the user- friendly interface (GUI). AntiVir MailGate Avira GmbH...

  • Page 11: Modules And Operating Mode Of Antivir Mailgate

    You can scan the queue on-demand using the Queue Manager avq (for scanning the spool directory, see Queue Manager avq – Page 47). Avira GmbH AntiVir MailGate...

  • Page 12: Licensing Concept

    The license is contained in a license file named hbedv.key . You will receive it by email from Avira GmbH. It contains certain data such as the programs you will use and the period of your license. The same license file may refer to more than one Avira product.

  • Page 13: System Requirements

    20 MB temporary disk space 32 MB free memory space (64 MB recommended) Linux with GLIBC or LIBC5; FreeBSD (Intel); OpenBSD (Intel) or Sun Sparc Solaris If you want to use the GUI: Java 1.4.0 or higher Avira GmbH AntiVir MailGate...
  • Page 14 Product Information AntiVir MailGate Avira GmbH...

  • Page 15: Chapter 3. Milter Mode

    To migrate from an older Milter installation to the current AntiVir MailGate (Milter mode), the file MILTER_MIGRATION must be used. It is located in the doc directory of the product kit. It is recommended to adjust the file avmailgate.conf instead of renaming the file avmilter.conf Avira GmbH AntiVir MailGate...

  • Page 16: Antivir Mailgate (Milter Mode) Features

    Isolation of infected or suspicious files in a quarantine directory Logfile used as email traffic log Immediate activation of new VDF Heuristic macrovirus detection Configurable templates for alerts Archive scanning (the supported archive formats are displayed with antivir --info) AntiVir MailGate Avira GmbH...

  • Page 17: Antivir Mailgate (Milter Mode) Integration In Sendmail

    – C: timeout to set up the connection to filter – S: timeout while sending information to filter – R: timeout while reading an answer from filter – E: timeout between sending the "End of message" and the response from the filter Avira GmbH AntiVir MailGate...
  • Page 18 Insert the corresponding lines in the file sendmail.mc (commands beginning with INPUT must be written in one line): for sendmail 8.11.x: define(`_FFR_MILTER´, `true´) INPUT_MAIL_FILTER(`avmilter´,`S=inet:3333@localhost, F=R, T=S:2m;R:2m;E:10m´) for sendmail 8.12.x: INPUT_MAIL_FILTER(`avmilter´,`S=inet:3333@localhost, F=R, T=S:2m;R:2m;E:10m´) Generate the file sendmail.cf Example: m4 sendmail.mc > /etc/mail/sendmail.cf AntiVir MailGate Avira GmbH...

  • Page 19: Chapter 4. Installation

    Installation with the Installation Script "install" – Page 20 Further Installation Steps, Depending on the MTA – Page 26 Testing AntiVir MailGate after Installation – Page 32 Installing MailGate Using the Graphical Installation Routine – Page 33 Avira GmbH AntiVir MailGate...

  • Page 20: Preparing The Installation Files

    We will describe the unpacking of the files without the graphical installation routine. Go to the temporary directory: cd /tmp Unpack the archive for the AntiVir kit: tar xzvf antivir-mailgate-prof-<version>.tar.gz The directory antivir-mailgate-prof-<version> will be created in the temporary directory. AntiVir MailGate Avira GmbH...

  • Page 21: Licensing

    AntiVir MailGate runs only as a demo version, with restricted functionality. Acquiring the license Contact us by telephone or by email (info@avira.de) to obtain a valid license file. You will receive the license file by email. You can also purchase AntiVir through our Online Shop (for more details, please visit http://www.avira.com).

  • Page 22: Installation With The Installation Script "Install

    . Otherwise you do not have the required authorization for root installation and the script returns an error message: You must be root, to execute this script. Go to the directory where you unpacked AntiVir MailGate kit. For example: cd /tmp/antivir-mailgate-prof-<version> AntiVir MailGate Avira GmbH...
  • Page 23 Instead of installing the internet update daemon, you may also manually check for updates using: antivir --update Please read the README file for more information about updating and which method best suits you. Would you like to install the internet update daemon? [n] Avira GmbH AntiVir MailGate...
  • Page 24 Change the settings if necessary and press Enter . Then you are asked whether a link should be created in /usr/sbin for the start script: Would you like to create a link in /usr/sbin for avmailgate? [y} AntiVir MailGate Avira GmbH...
  • Page 25 Would you like the updater to log to a custom file? [y] Click Enter . The script asks for the path and file name: What will be the log file name with absolute path (it must begin with ’/’)? [/ var/log/avupdater.log] Avira GmbH AntiVir MailGate...
  • Page 26 Installation of the following features complete: AntiVir Engine AntiVir MailGate AntiVir GUI Depending on your MTA, proceed with the installation as described in Further Installation Steps, Depending on the MTA – Page 26. Finally, you can start AntiVir MailGate: /usr/lib/AntiVir/avmailgate start AntiVir MailGate Avira GmbH...
  • Page 27 Open the directory where you unpacked AntiVir MailGate. For example, cd /tmp/antivir-mailgate-prof-<version>/ Type: ./install The installation script runs as described above. Make the changes you need during installation procedure. AntiVir MailGate is installed with the required settings. Avira GmbH AntiVir MailGate...

  • Page 28: Further Installation Steps, Depending On The Mta

    # and on 127.0.0.1 port 10025 local_interfaces = 0.0.0.0.25 : 127.0.0.1.10025 Add router entry: Search for the entry begin router in exim.conf and add the following entries: # Router for AntiVir MailGate antivir_mailgate: debug_print = "R: AntiVir MailGate for AntiVir MailGate Avira GmbH...
  • Page 29 Modify (or add) the following entries in avmailgate.conf : ListenAddress 0.0.0.0 port 25 ForwardTo SMTP: 127.0.0.1 port 825 Restart AntiVir MailGate. Exim configuration Modify (or add) the following entries in exim.conf : daemon_smtp_port = 825 Restart Exim. Avira GmbH AntiVir MailGate...
  • Page 30 Establish the email forwarding mode. Look into the file /etc/avmailgate.conf for: # Select how mail should be forwarded. Change these entries as below: # ForwardTo /usr/sbin/sendmail -oem -oi # Or if you want the mail to be sent by SMTP ForwardTo SMTP: localhost port smtp-backdoor AntiVir MailGate Avira GmbH...
  • Page 31 /usr/bin/tcpserver -D -R -v -p -x /etc/tcprules.d/ qmail-smtp.cdb \ -u $QMAILDUID -g $NOFILESGID 0 smtp /var/qmail/bin/ qmail-smtpd 2>&1 Edit the lines as follows: /usr/bin/tcpserver -D -R -v -p -x /etc/tcprules.d/ qmail-smtp.cdb \ -u $QMAILDUID -g $NOFILESGID 0 smtp-backdoor /var/ qmail/bin/qmail-smtpd 2>&1 Avira GmbH AntiVir MailGate...
  • Page 32 If you use SuSE Mail Server II: replace the entry #AllowSourceRouting NO with: AllowSourceRouting YES stop and restart AntiVir MailGate: /etc/init.d/avgate restart add the following entry in /etc/postfix/master.cf : # service type private unpriv chroot wakeup maxproc com- AntiVir MailGate Avira GmbH...
  • Page 33 It prevents Postfix from listening on SMTP port. SMTP daemon can listen on this port. Emails forwarded by the SMTP daemon will be processed by the Sendmail wrapper /usr/lib/sendmail (delivered by Postfix). Restart Postfix: /etc/init.d/postfix restart /etc/init.d/postfix reload Avira GmbH AntiVir MailGate...

  • Page 34: Testing Antivir Mailgate After Installation

    Eicar file from the website http://www.eicar.com Send this file as an attachment to a test email for AntiVir MailGate. Check the reactions in the directory /var/spool/avmailgate/rejected . Check the messages AntiVir MailGate sent to the logfile or syslog . AntiVir MailGate Avira GmbH...

  • Page 35: Installing Mailgate Using The Graphical Installation Routine

    The graphical installation routine for AntiVir WebGate runs only on Linux. It requires Java 1.4.0 or higher. The program file is unpacked and saved in the directory: /tmp/antivir-mailgate-linux-gui_installer Open the directory and type: ./install A welcome text with a short description of the program appears: Click Next . Avira GmbH AntiVir MailGate...
  • Page 36 There are three ways to install MailGate: Express setup : the program is installed with basic settings. Custom setup : the program is installed according to the user’s options. GUI only : only the GUI is installed in usr/lib/AntiVir . AntiVir MailGate Avira GmbH...
  • Page 37 MailGate runs as a demo version Select Express setup and click Install . All settings and further instructions appear in a window. Click Next . The program is installed. Click Done in the final window to complete the installation. Avira GmbH AntiVir MailGate...
  • Page 38 Exim, Qmail etc.): Select your mail server and click Next . The following window asks if you want to activate the GUI support (entry in the file avmailgate.conf ): Select Yes or No and click Next . AntiVir MailGate Avira GmbH...
  • Page 39 Select Yes and click Next (in this case, you are asked if you want the Internet Updater to start automatically when the computer is booted). The next window asks whether the license file is to be copied: Follow the instructions and then click Next . Avira GmbH AntiVir MailGate...
  • Page 40 The next window asks whether MailGate should start automatically when the computer is booted: Select Yes or No and click Next . A window will display the settings and further instructions: Click Install . The program is installed. AntiVir MailGate Avira GmbH...
  • Page 41 Choose this option if you wish to install only the GUI. Select GUI only and click Next . The GUI is installed in the following directory: /usr/lib/AntiVir All settings and further instructions appear in a window. Click Install . The GUI is installed. Avira GmbH AntiVir MailGate...
  • Page 42 The following window appears only if you selected a mail server at the beginning of the installation: You can either follow the instructions of the selected mail server "step by step" or read the entire manual at once. The installation instructions differ according to the mail server. AntiVir MailGate Avira GmbH...
  • Page 43 Select Go through the MANUAL step by step and click Next . Example Postfix: the following window appears: Click Next . Another window is displayed: If you want to start the GUI directly: activate the option Start GUI now and click Done . The installation is completed. Avira GmbH AntiVir MailGate...
  • Page 44 Installation AntiVir MailGate Avira GmbH...

  • Page 45: Chapter 5. Operation

    The script /usr/lib/AntiVir/avmailgate enables starting and stopping the mailgate daemon. You must login as root or you must have the required access rights to start or stop AntiVir MailGate manually. Avira GmbH AntiVir MailGate...
  • Page 46 Type: /usr/lib/AntiVir/avmailgate restart The program restarts after showing the following message: Stopping AntiVir: avmailgate. Starting AntiVir: avmailgate. Showing AntiVir MailGate status Type: /usr/lib/AntiVir/avmailgate status The program shows information on the MailGate daemons: AntiVir Status: avmailgate running. AntiVir MailGate Avira GmbH...

  • Page 47: Updating Antivir Mailgate Manually

    AntiVir daemons. The restart has to be made manually, as root . If you want to update AntiVir: type: /usr/lib/AntiVir/antivir --update If you just want to check for a new AntiVir version without updating AntiVir: type: /usr/lib/AntiVir/antivir --update --check Avira GmbH AntiVir MailGate...

  • Page 48: Parameters For Smtp And Scanner Daemon

    Parameter Description -D debug-level Sets debug level. -R remote.host Defines the remote host domain name (default: -i) -r remote-ip-addr Defines the remote host IP address (aaa.bbb.ccc.ddd) (default: -i) -q port Defines the remote host TCP port AntiVir MailGate Avira GmbH...

  • Page 49: Queue Manager Avq

    --> Found e.g. (1x) Eicar Test Signature (type: virus) The following status information is displayed, according to the spam filter results (see Configuring the Spam Filter – Page 74): --> Outbreak detected --> Dangerous attachment found --> Dangerous iframe found --> Dangerous alert found Avira GmbH AntiVir MailGate...
  • Page 50 You can use the following parameters when deleting: Parameter Description --remove=26158-2212B237 Deletes the email with the given ID. --remove=all Deletes all emails. Before deleting, an alert appears to confirm the action. --flush Immediately empties the incoming and outgoing queue. AntiVir MailGate Avira GmbH...
  • Page 51 Type the command (where ID is the ID of the infected email): /usr/lib/AntiVir/avmailgate.bin --avq --deliver=ID The email is delivered, whatever the virus scanner reports, and it is deleted from the queue. Avira GmbH AntiVir MailGate...

  • Page 52: Procedures When Detecting Viruses/Unwanted Programs

    Send us the virus or unwanted program packed in a password-protected archive (PGP, gzip, WinZIP, PKZip, Arj), attached to an email message, to virus@avira.com. When packing, use the password virus . In this way, the file will not be deleted by virus scanners on an email gateway.

  • Page 53: Chapter 6. Configuration

    The configuration files are read when the program starts. It will ignore empty lines or lines beginning with #. They are provided with default values, which are suitable for most set-ups. Some entries are deactivated or commented out using # and they can be activated by deleting the # sign. Avira GmbH AntiVir MailGate...

  • Page 54: Mailgate Actions When Detecting Viruses/ Unwanted Programs

    : the email is to be subjected to a virus scan; Qf- : the email is to be forwarded without scanning; vf- : the email contains a virus/unwanted program; mf- : the email has a MIME problem. Example Data file: df-32557-0BE692EB Corresponding control file: qf-32557-0BE692EB AntiVir MailGate Avira GmbH...

  • Page 55: Configuring Avmailgate.conf

    The users and group for MailGate processes (they should not be root ). User uucp Group antivir If these are modified, the access rights of the relevant directories must also be changed. Postmaster Postmaster: Receives alerts about concerning viruses/unwanted programs, as well as other notifications: Postmaster postmaster Avira GmbH AntiVir MailGate...
  • Page 56 – Page 67. MatchMailAddressForLocal RECIPIENT SMTP banner: SMTPBanner Sets the headers sent by MailGate. You can edit the text if you do not want to reveal the type of security software, for example. SMTPBanner "AntiVir MailGate" AntiVir MailGate Avira GmbH...
  • Page 57 100. The zero value (default setting) deactivates this function, so that the number is unlimited. MaxIncomingConnections SMTP SMTP timeout: Timeout Defines the maximum timeout in seconds for SMTP connections. SMTPTimeout Avira GmbH AntiVir MailGate...
  • Page 58 If REFUSED is set and there is an "!" in the recipient's address, the message is BangIs rejected. If IGNORED is set, "!" is treated as a normal sign in the recipient's address. If INTERPRETED is set, the recipient's address is transformed into RFC821 AntiVir MailGate Avira GmbH...
  • Page 59 This option can activate/deactivate the address filter. The default setting is NO , i.e. no address filter is used with the standard installation. AddressFilter To be able to use the address filter, the following files are necessary: /etc/avmailgate.ignore /etc/avmailgate.scan Avira GmbH AntiVir MailGate...
  • Page 60 Filter Scanning order of the filter table: TableOrder This option can be used only if AddressFilter is active ( AddressFilter YES ). The possible parameters are: scan,ignore ignore,scan AntiVir MailGate Avira GmbH...
  • Page 61 Defines maximum time for email scanning, in seconds: ScanTimeout Maximum number for the forwarder: Forwarders Maximum number of simultaneous forwarding processes. The value depends on the efficiency of your email system and on the quality of your email connection (default value: 10). MaxForwarders Avira GmbH AntiVir MailGate...
  • Page 62 If the setting is NO, non-MIME emails are sent without further processing. If the setting is YES, non-MIME emails are transformed into MIME emails. ForwardAllEmailAsMIME Sending notifications In addition to avmailgate.conf , you can use avmailgate.warn for configuration (see Virus Warnings: Configuring avmailgate.warn – Page 67). AntiVir MailGate Avira GmbH...
  • Page 63 Name or email address of the recipients to be warned (if a virus/unwanted program is detected in an email): AlertsUser AvMailGate AlertsUser AvMailGate@mailserver.mydomain.tld Bounce Recipient for email failure: MessageUser This is the user that receives email failure reports when an email cannot be sent by MTA. BounceMessageUser MAILER-DAEMON Avira GmbH AntiVir MailGate...
  • Page 64 For example: X-AntiVirus: checked by AntiVir MailGate... The text cannot be modified. AddXHeader AddReceived Adding "received by" header: ByHeader If the setting is YES, the scanned email contains a note on incoming time. AddReceivedByHeader AntiVir MailGate Avira GmbH...
  • Page 65 Number of AntiVir scanners: Scanners Establishing the number of AnitVir scanners in pool (see UseProxy ). ProxyScanners Proxy Simultaneous proxy connections: Connections Establishing the maximum number of simultaneous connections between AntiVir MailGate and scanner pool. ProxyConnections Avira GmbH AntiVir MailGate...
  • Page 66 ArchiveMaxRatio BlockPartial Block partial archive: Archive If activated (YES), this option blocks partial archives. BlockPartialArchive Block Blocking emails with unsupported archives: Unsupported Blocks emails containing archives that are not supported by the scanner. Archive BlockUnsupportedArchive NO AntiVir MailGate Avira GmbH...
  • Page 67 You must activate this entry in order for MailGate to communicate with the GUI. Required parameters: GuiSupport GuiCAFile /usr/lib/AntiVir/gui/cert/cacert.pem GuiCertFile /usr/lib/AntiVir/gui/cert/server.pem GuiCertPass antivir_default If these parameters are missing or not valid, the GUI is not available. Avira GmbH AntiVir MailGate...
  • Page 68 (in seconds). The zero value deactivates the option. Example: There are 100 emails in the queue. ThrottleMessageCount is set to 10 and ThrottleDelay to 1. Then a maximum of 10 emails are processed per second. ThrottleDelay AntiVir MailGate Avira GmbH...

  • Page 69: Configuring Avmailgate.acl

    AntiVir MailGate. This is established via the sender's or recipient’s domain or IP address. Set the local hosts and/or domains. For example: local: localhost local: avira.com Set which hosts and networks may send emails. For example: relay: 127.0.0.1/8 192.168.0.0/16 IP addresses You can specify IP addresses in various ways: 192.168.0.0/16 or 192.168...

  • Page 70: Configuring Report Templates

    Write the texts you need in the files listed above. Keep the file structure: - the first line is the email subject; - then an empty line follows (new line); - then the text of the email. AntiVir MailGate Avira GmbH...
  • Page 71 AntiVir has discovered the following in the email sent from your address: ALERTS This email has not been sent, but isolated on your server. Please scan your system immediately for possible virus infection. Clean your system before sending any more email messages. Avira GmbH AntiVir MailGate...

  • Page 72: Regular Updates Configuration

    We recommend that you configure your AntiVir MailGate program to automatically access the Avira website and to check for updates at regular intervals. For information on updates, see Chapter Configuring Update Reports –...
  • Page 73 Generate your own PGP key pair as described in the GnuPG documentation. Import the AntiVir public PGP key into your key-ring: gpg --import antivir.gpg Display the fingerprint of the key to check that it really is the AntiVir PGP key: gpg --fingerprint build@avira.com Avira GmbH AntiVir MailGate...
  • Page 74 Configuration The 40-character fingerprint is displayed. Check if the displayed fingerprint corresponds with the one on the Avira website (http://www.avira.de) Sign the AntiVir public key in order to certify its validity: gpg --sign-key build@avira.com Change to the /bin sub-directory of the AntiVir installation directory: cd /tmp/antivir-mailgate-prof-<version>/bin/<OS>/...

  • Page 75: Configuring Update Reports

    Logfile settings Apart from syslog, update reports can be also written in a logfile. There are no default settings for this parameter. Type the name and full path for the log file. For example: /var/log/antivir.log Avira GmbH AntiVir MailGate...

  • Page 76: Configuring The Spam Filter

    --version The output should contain the following line: product: Avira AntiSpam and Outbreak Detection A spam filter is integrated in AntiVir MailGate and it filters spam and other unwanted emails. The spam filter opens a connection to the spam database server for every email to check its status.
  • Page 77 Specifies the interval in seconds for the spam filter proxy to reopen the connection Proxy to the server if the connection fails. Timeout SpamFilterProxyTimeout SpamFilter Specifies the maximum number of connections to the spam database server. Proxy SpamFilterProxyConnections Connections Avira GmbH AntiVir MailGate...
  • Page 78 Configuration AntiVir MailGate Avira GmbH...

  • Page 79: Chapter 7. Graphical User Interface (Gui)

    GUI communicates with AntiVir MailGate via SSL through the loopback network Communication interface. You must specify the following parameters in the configuration file avmailgate.conf : GuiSupport GuiCAFile /usr/lib/AntiVir/gui/cert/cacert.pem GuiCertFile /usr/lib/AntiVir/gui/cert/server.pem GuiCertPass antivir_default If these parameters are missing or invalid, the GUI is not available. Avira GmbH AntiVir MailGate...
  • Page 80 You must have a COMMERCIAL license for AntiVir MailGate ( antivir --version ). The parameter GuiSupport must be set in avmailgate.conf The user must belong to the "antivir" group. If these requirements are not met, an error message appears. AntiVir MailGate Avira GmbH...

  • Page 81: Operating Antivir Mailgate Using The Gui

    MailGate is not active yellow text: MailGate restart More In case there are more MailGates selected in the network, the tree contains a new MailGates branch for every MailGate, indicating its status (as described above, in Status display). Avira GmbH AntiVir MailGate...
  • Page 82 Start MailGate : to start MailGate. This menu option is active only when MailGate is not running Stop MailGate : to stop MailGate. This menu option is active only when MailGate is running Restart MailGate : to restart MailGate (MailGate will be stopped and restarted). AntiVir MailGate Avira GmbH...
  • Page 83 Displays the complete logfile, with full paths, the current size of the logfile in KB, the displayed log levels and the log level used by MailGate. Four buttons appear at the bottom of the window: Settings, Rows , Load new and More . Avira GmbH AntiVir MailGate...
  • Page 84 Select the menu option MailGate/Stop MailGate . Restart Select the menu option MailGate/Restart MailGate . Closing GUI Select System/Exit . The GUI is closed. When you close GUI, it retains the current status of AntiVir MailGate. AntiVir MailGate Avira GmbH...

  • Page 85: Configuring Antivir Mailgate Using The Gui

    The configuration makes a distinction between "normal" user settings and settings for "experts". For the latter, you have to activate the Expertmode option. Click on an item in the tree structure. A window with the corresponding settings appears. Avira GmbH AntiVir MailGate...
  • Page 86 If these settings are modified, the access rights of the corresponding directories must be changed too. Postmaster Receives warnings about concerning viruses/unwanted programs as well as other notifications. It sets Postmaster in avmailgate.conf . These three parameters (User, Group, Postmaster) can also be set manually. AntiVir MailGate Avira GmbH...
  • Page 87 For unpacking attachments, supplementary space will be needed. It sets TemporaryDir in avmailgate.conf . This directory saves the PID files for the main processes of MailGate. It sets PidDir in avmailgate.conf . Avira GmbH AntiVir MailGate...
  • Page 88 If you are uncertain, you can keep the default setting. The parameter is ListenAddress in avmailgate.conf . Program Define how emails should be sent. The default setting is by Sendmail. SMTP The email can also be sent by SMTP. It sets ForwardTo in avmailgate.conf . AntiVir MailGate Avira GmbH...
  • Page 89 LOCAL : warning messages are sent only if the recipient is a local user of your domain. Set the option in avmailgate.acl to local . YES : the recipient always receives virus warnings. The parameter is ExposeRecipientsAlerts in avmailgate.conf . Avira GmbH AntiVir MailGate...
  • Page 90 It sets NotifyEndOfLicense in avmailgate.conf . If the option AddStatusInBody is set to YES , no status text is added to an email Mail size for status... that exceeds the given size value e.g.: 4kB, 3MB, 2GB. AntiVir MailGate Avira GmbH...
  • Page 91 The field has to contain the full path to a distinct logfile. It sets LogFile in avmailgate.conf . If there is no entry, the program will not use a separate logfile. Whether you activate a separate logfile or not, entries are sent to syslog. Avira GmbH AntiVir MailGate...
  • Page 92 If the setting is Yes , the email contains the following line in the headers: Precedence: junk if a virus/unwanted program has been detected. Programs that are set to respond automatically to incoming emails (e.g.: vacation) would not react to this report. The parameter is AddPrecedenceHeader in avmailgate.conf . AntiVir MailGate Avira GmbH...
  • Page 93 Graphical User Interface (GUI) Prefix settings The program reports virus and malware detections. You can also set it to report so-called "extended malware types" by activating the corresponding options. Avira GmbH AntiVir MailGate...
  • Page 94 AntiVir MailGate. This is established via the sender's or recipient’s domain or IP address. Accept Set the local hosts and/or domains. For example localhost or avira.com domain Set which hosts and networks may send emails. For example 127.0.0.1/8...
  • Page 95 Enable macro Activates heuristics for macroviruses in documents. heuristics Activates Win32 file heuristics, which also detect unknown file viruses, worms, Enable Win32 heuristics Trojans etc. You can select the level of this method: low, medium or high. Avira GmbH AntiVir MailGate...
  • Page 96 Larger emails are rejected. If the value is 0, all messages of any size are scanned. It sets MaxMessageSize in avmailgate.conf . Free blocks on AntiVir MailGate blocks incoming connections if hard disk free space is smaller file system than the given value. spool directory It sets MinFreeBlocks in avmailgate.conf . AntiVir MailGate Avira GmbH...
  • Page 97 It sets ScanTimeOut in avmailgate.conf . stopped Periodicity of Sets the time in seconds for the scanner and forwarder daemon to scan the emails queue scanning queue for viruses and unwanted programs. It sets PollPeriod in avmailgate.conf . Avira GmbH AntiVir MailGate...
  • Page 98 Defines the maximum timeout in seconds for receiving a reply to the MAIL FROM MAIL FROM command. Timeout It sets SMTPMailFromTimeout in avmailgate.conf . SMTP Defines the maximum timeout in seconds for receiving a reply to the RCPT TO RCPT command. Timeout It sets SMTPRcptTimeout in avmailgate.conf . AntiVir MailGate Avira GmbH...
  • Page 99 This option determines whether the domain names of RECIPIENT, SENDER or from BOTH addresses should be matched with the entries in the local: - section in avmailgate.acl It sets MatchMailAddressForLocal in avmailgate.conf . For more information, see Configuring avmailgate.acl – Page 67. Avira GmbH AntiVir MailGate...
  • Page 100 This option should only be used temporarily. The option ThrottleDelay also has to be set. The set number is the maximum number of emails to be processed by ThrottleDelay (see examples below). AntiVir MailGate Avira GmbH...
  • Page 101 (in seconds). The zero value deactivates the option. Example: There are 100 emails in the queue. ThrottleMessageCount is set to 10 and ThrottleDelay to 1. Then a maximum of 10 emails are processed per second. Avira GmbH AntiVir MailGate...
  • Page 102 JOE on host THREE . This option specifies whether all except JOE@THREE should be excluded ( NO ) or if the address should be retained ( YES ) It sets AllowSourceRouting in avmailgate.conf . AntiVir MailGate Avira GmbH...
  • Page 103 If INTERPRETED is set, the recipient's address is transformed into RFC821 standard form. For example, the address user%hostC%hostB@hostA is transformed into @hostA,@hostB:user@hostC If source routing is allowed, the email is sent to hostA, otherwise to hostC. It sets InEnvelopeAddressesPercentIs in avmailgate.conf . Avira GmbH AntiVir MailGate...
  • Page 104 Even if not MIME, emails can be transformed into MIME emails. They receive a mail as MIME MIME header with content type: text/plain, content disposition: inline and content encoding: 7 bit or 8 bit. The "encoding" depends on the original email. It sets ForwardAllEmailAsMIME in avmailgate.conf . AntiVir MailGate Avira GmbH...
  • Page 105 It sets ArchiveMaxSize in avmailgate.conf . Max. Blocks so-called "mail bombs" with a very high compression ratio. compression The zero value deactivates this option. This value is not recommended ratio It sets ArchiveMaxRatio in avmailgate.conf . Avira GmbH AntiVir MailGate...
  • Page 106 If the setting is YES , emails containing password-protected files in archives are Block mails with encrypted rejected. archives If NO is set, emails containing encrypted archives are also delivered It sets BlockEncryptedArchive in avmailgate.conf . AntiVir MailGate Avira GmbH...
  • Page 107 The parameter is BlockEncryptedArchive in avmailgate.conf . Email address Type the corresponding email addresses. to scan The email addresses are saved in avmailgate.scan Email address Type the corresponding email addresses. to ignore The email addresses are saved in avmailgate.ignore Avira GmbH AntiVir MailGate...
  • Page 108 Establish the number of AnitVir scanners in the pool (see UseProxy ). Prepared scanners It sets ProxyScanners in avmailgate.conf . Max. Establish the maximum number of simultaneous connections between AntiVir connections to MailGate and scanner pool. the proxy It sets ProxyConnections in avmailgate.conf . AntiVir MailGate Avira GmbH...

  • Page 109: Chapter 8. Service

    The expertise and experience of our developers is available to you. The experts from Avira answer your questions and help you with difficult technical problems. During the first 30 days after you have purchased a license, you can use our AntiVir Installation Support by phone, email or by online form.

  • Page 110: Contact

    Service Contact Address Avira GmbH Lindauer Strasse 21 D-88069 Tettnang Germany Internet You can find further information on us and our products by visiting http://www.avira.com. AntiVir MailGate Avira GmbH...

  • Page 111: Chapter 9. Appendix

    Demo version Without a license file, AntiVir MailGate runs as a demo version. An Avira banner is inserted in every email. The automatic update function is not available, so you will have to download new virus definitions and scan engine versions manually from our website.

  • Page 112: Further Information

    Further Information You can find further information on viruses, worms, macro viruses and other unwanted programs at http://www.avira.com . AntiVir MailGate Avira GmbH...

  • Page 113: Golden Rules For Protection Against Viruses

    Draw up a plan for data protection and recovery. Your network must be correctly configured and the access rights must be wisely assigned. This is represents good protection against viruses. Avira GmbH AntiVir MailGate...
  • Page 114 Avira GmbH Lindauer Str. 21 D-88069 Tettnang Telephone: +49 (0) 7542-500 0 Fax: +49 (0) 7542-525 10 Email: info@avira.com Internet: http://www.avira.com All rights reserved. Subject to change. © Avira GmbH...

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