Novell GROUPWISE 8 - ADMINISTRATION Administration Manual page 861

/mbcount
Sets the number of messages that can be received from a single IP address in a given number of
seconds before the Internet Agent denies access to its GroupWise system. It provides a form of
system security to protect your system from mailbombs.
For example, with /mbcount set to 25 and /mbtime set to 60 seconds, if these limits are exceeded the
sender's IP address is blocked from sending any more messages. The IP address of the sender is also
displayed in the Internet Agent console. You can permanently restrict access to your system by that
IP address through settings on the Access Control page in ConsoleOne (Internet Agent object >
Access Control). By default, the mailbomb feature is turned off. To enable this feature, you must
specify a value for mailbomb count and mailbomb time. See Section 47.2.4, "Mailbomb (Spam)
Protection," on page 776.
Syntax: /mbcount-number
Example: /mbcount-25
/mbtime
Specifies the mailbomb time limit in seconds. This switch works with the /mbcount switch to block
access to your GroupWise system from unsolicited inundations of e-mail. The default value is 10
seconds. See Section 47.2.4, "Mailbomb (Spam) Protection," on page 776.
Syntax: /mbtime-seconds
Example: /mbtime-60
/rejbs
Prevents delivery of messages if the sender's host is not authentic. When this switch is used, the
Internet Agent refuses messages from a host if a DNS reverse lookup shows that a PTR record does
not exist for the IP address of the sender's host. See Section 47.2.4, "Mailbomb (Spam) Protection,"
on page 776.
If this switch is not used, the Internet Agent accepts messages from any host, but displays a warning
if the initiating host is not authentic.
Syntax: /rejbs
/xspam
Flags messages to be handled by the client Junk Mail Handling feature if they contain an x-spam-
flag:yes in the MIME header. See Section 47.2.5, "Customized Spam Identification," on page 777.
Syntax: /xspam
/rbl
Lets you define the addresses of blacklist sites (free or fee-based) you want the Internet Agent to
check for blacklisted hosts. If a host is included in a site's blacklist, the Internet Agent does not
accept messages from it.
Syntax: /rbl-blackholes.mail-abuse.org,bl.spamcop.net
Using Internet Agent Startup Switches 861