ZyXEL Communications 1000 ユーザーズマニュアル

Chapter 38 Anti-Spam

ZyWALL USG 1000 User’s Guide

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.

Sender or Mail 
Relay IP 
Address

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

Netmask

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

Sender E-Mail 
Address

This field displays when you select the E-Mail type. Enter a keyword (up 
to 63 ASCII characters). See 

 for more 

details.

Mail Header 
Field Name

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.

Field Value 
Keyword

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 

 for more details.

OK

Click OK to save your changes. 

Cancel

Click Cancel to exit this screen without saving your changes.

Table 175   Configuration > Anti-X > Anti-Spam > Black/White List > Black List  (or 
White List) > Add