ZyWALL 5/35/70 Series User’s Guide

The following table describes the labels in this screen.

Table 88 Anti-Spam Rule Edit

LABEL

DESCRIPTION

 

 

Rule Edit

 

 

 

Active

Turn this entry on to have the ZyWALL use it as part of the whitelist or blacklist. You

 

must also turn on the use of the corresponding list (in the Anti-Spam

 

Customization screen) and the anti-spam feature (in the Anti-Spam General

 

screen).

Type

Use this field to base the entry on the e-mail’s source IP address, source e-mail

 

address or an MIME header.

 

Select IP to have the ZyWALL check e-mail for a specific source IP address.

 

You can create whitelist IP address entries for e-mail servers on your LAN or DMZ

 

to speed up the ZyWALL’s processing of your outgoing e-mail.

 

Select E-Mailto have the ZyWALL check e-mail for a specific source e-mail

 

address or domain name.

 

You can create a whitelist entry for your company’s domain name (or e-mail

 

accounts) to speed up the ZyWALL’s processing of e-mail sent by your company’s

 

employees.

 

Select MIME Header to have the ZyWALL check e-mail for specific MIME headers

 

or values.

 

Configure blacklist MIME header entries to check for e-mail from bulk mail

 

programs or that have content that are commonly used in spam. You can also

 

configure whitelist MIME header entries to allow certain MIME headers or values

 

that identify the e-mail as being from a trusted source.

IP Address

This field displays when you select the IP type. Enter an IP address in dotted

 

decimal notation.

IP Subnet Mask

This field displays when you select the IP type. Enter the subnet mask here, if

 

applicable.

E-Mail Address

This field displays when you select the E-Mailtype. 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 ZyWALL 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”.

Header

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.

Value

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 15 Anti-Spam

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