ZyXEL Communications ZyWall USG 2000 User Manual page 660

Unified security gateway

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Table of Contents

Chapter 38 Anti-Spam

spam policies. You can also select the action the ZyWALL takes when the mail

sessions threshold is reached.

Figure 442 Configuration > Anti-X > Anti-Spam > General

The following table describes the labels in this screen.

Table 175 Configuration > Anti-X > Anti-Spam > General

Show Advance

Settings / Hide

Enable Anti-

Action taken

threshold is

Click this button to display a greater or lesser number of configuration

Select this check box to check SMTP (TCP port 25) and POP3 (TCP port

110) traffic for spam e-mail.

An e-mail session is when an e-mail client and e-mail server (or two e-

mail servers) connect through the ZyWALL. Select how to handle

concurrent e-mail sessions that exceed the maximum number of

concurrent e-mail sessions that the anti-spam feature can handle. See

the chapter of product specifications for the threshold.

Select Forward Session to have the ZyWALL allow the excess e-mail

sessions without any spam filtering.

Select Drop Session to have the ZyWALL drop mail connections to stop

the excess e-mail sessions. The e-mail client or server will have to re-

attempt to send or receive e-mail later when the number of e-mail

sessions is under the threshold.

Click this to create a new entry . Select an entry and click Add to create a

new entry after the selected entry.

Select an entry and click this to be able to modify it.

ZyWALL USG 2000 User's Guide

Troubleshooting