ZyXEL Communications Vantage CNM 2.3 User Manual page 173

Table 60 Device Operation > Device Configuration > Security > Anti-Spam > Lists >
Add/Edit (continued)
LABEL
IP Address
IP Subnet Mask This field displays when you select the IP type. Enter the subnet mask
E-Mail Address
Header
Value
Vantage CNM User's Guide
DESCRIPTION
This field displays when you select the IP type. Enter an IP address in
dotted decimal notation.
here, if applicable.
This field displays when you select the E-Mail type. Enter an e-mail
address or domain name (up to 63 ASCII characters).
You can enter an individual e-mail address like abc@def.com.
If you enter a domain name, the device searches the source e-mail
address string after the "@" symbol to see if it matches the domain
name. For example, you configure a entry with "def.com" as the domain
name. E-mails sent from def.com e-mail addresses such as
"abc@def.com" match the entry. E-mails sent from mail.def.com, such
as abc@mail.def.com do not match the entry since "mail.def.com" does
not match "def.com".
You can also use a wildcard (*). For example, if you configure *def.com,
any e-mail address that ends in def.com matches. So "mail.def.com"
matches.
The wildcard can be anywhere in the text string and you can use more
than one wildcard. You cannot use two wildcards side by side, there
must be other characters between them.
The device can check up to the first 63 characters of an e-mail's
address. The whitelist or blacklist check fails for addresses over 63
characters. However, a whitelist or blacklist entry that uses some text
followed by a wildcard only requires the device to check the number of
characters before the wildcard. So the check would still work for
addresses longer than 63 characters. For example, if you used "abc*",
the device would only check up to the first three characters of the e-mail
address.
This field displays when you select the MIME Header type.
Type the header part of an MIME header (up to 63 ASCII characters).
In an MIME header, the header is the part that comes before the colon
(:).
For example, if you want the whitelist or blacklist entry to check for the
MIME header "X-MSMail-Priority: Normal", enter "X-MSMail-Priority"
here as the MIME header.
This field displays when you select the MIME Header type.
Type the value part of an MIME header (up to 63 ASCII characters).
In an MIME header, the part that comes after the colon is the value.
For example, if you want the whitelist or blacklist entry to check for the
MIME header "X-MSMail-Priority: Normal", enter "Normal" here as the
MIME value.
Chapter 6 Device Security Settings
173