Regular Expressions In Black Or White List Entries; The Anti-Spam White List Screen - ZyXEL Communications USG40 User Manual

Table 267 Configuration > UTM Profile > Anti-Spam > Black/White List > Black/White List > Add
LABEL
Sender E-Mail
Address
Mail Header Field
Name
Field Value
Keyword
OK
Cancel

39.5.2 Regular Expressions in Black or White List Entries

The following applies for a black or white list entry based on an e-mail subject, e-mail address, or
e-mail header value.
• Use a question mark (?) to let a single character vary. For example, use "a?c" (without the
quotation marks) to specify abc, acc and so on.
• 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 ZyWALL/USG checks the first header with the name you specified in the entry. So if the e-
mail has more than one "Received" header, the ZyWALL/USG checks the first one.

39.6 The Anti-Spam White List Screen

Click Configuration > UTM Profile > Anti-Spam > Black/White List and then the White List
tab to display the Anti-Spam White List screen.
Configure the white list to identify legitimate e-mail. You can create white list entries based on the
sender's or relay's IP address or e-mail address. You can also create entries that check for
particular header fields and values or specific subject text.
Chapter 39 Anti-Spam
DESCRIPTION
This field displays when you select the E-Mail type. Enter a keyword (up to 63 ASCII
characters). See Section 39.5.2 on page 690
This field displays when you select the Mail Header type.
Type the name part of an e-mail header (the part that comes before the colon). Use up
to 63 ASCII characters.
For example, if you want the entry to check the "Received:" header for a specific mail
server's domain, enter "Received" here.
This field displays when you select the Mail Header type.
Type the value part of an e-mail header (the part that comes after the colon). Use up to
63 ASCII characters.
For example, if you want the entry to check the "Received:" header for a specific mail
server's domain, enter the mail server's domain here.
See Section 39.5.2 on page 690
Click OK to save your changes.
Click Cancel to exit this screen without saving your changes.
ZyWALL/USG Series User's Guide
690
for more details.
for more details.