Regular Expressions In Black Or White List Entries; The Anti-Spam White List Screen; Figure 392 Anti-X > Anti-Spam > Black/White List > White List; Table 181 Anti-X > Anti-Spam > Black/White List > White List - ZyXEL Communications ZyWALL USG 300 User Manual

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Table 180 Anti-X > Anti-Spam > Black/White List > Black List (or White List) > Add

34.4.2 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 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 checks the first one.

Click Anti-X > 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.

Figure 392 Anti-X > Anti-Spam > Black/White List > White List

The following table describes the labels in this screen.

Table 181 Anti-X > Anti-Spam > Black/White List > White List

General Settings

Enable White List

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Click OK to save your changes.

Click Cancel to exit this screen without saving your changes.

Select this check box to have the ZyWALL forward e-mail that matches (an

active) white list entry without doing any more anti-spam checking on that

individual e-mail.

Chapter 34 Anti-Spam