ZyXEL ZyWALL ATP700 User Guide - Page 621

Chapter 31 Email Security The following table describes the labels in this screen. Table 240 Configuration > Security Service > Email Security LABEL DESCRIPTION General Settings Enable Check White List Check Black List Black List Spam Tag Check Malicious Mail Malicious Mail Tag Select this check box to activate the settings in this section. Select this check box to check email against the white list. The Zyxel Device classifies email that matches a white list entry as legitimate (not spam). Select this check box to check email against the black list. The Zyxel Device classifies email that matches a black list entry as spam. Enter a message or label (up to 15 ASCII characters) to add to the mail subject of emails that match the Zyxel Device's spam black list. Select this to identify spam email by content, such as malicious content. Enter a message or label (up to 15 ASCII characters) to add to the beginning of the mail subject of emails that are determined to spam based on the mail content analysis. Check DNSBL DNSBL Spam Tag This tag is only added if the email security policy is configured to forward spam mail with a spam tag. Select this check box to check email against the Zyxel Device's configured DNSBL domains. The Zyxel Device classifies email that matches a DNS black list as spam. Enter a message or label (up to 15 ASCII characters) to add to the beginning of the mail subject of emails that have a sender or relay IP address in the header that matches a black list maintained by one of the DNSBL domains listed in the Zyxel Device. DNSBL Domain List Add Edit Remove Activate Inactivate Status # DNSBL Domain Actions for Spam Mail SMTP This tag is only added if the email security policy is configured to forward spam mail with a spam tag. Click this to create a new entry. Select an entry and click this to be able to modify it. Select an entry and click this to delete it. To turn on an entry, select it and click Activate. To turn off an entry, select it and click Inactivate. The activate (light bulb) icon is lit when the entry is active and dimmed when the entry is inactive. This is the entry's index number in the list. This is the name of a domain that maintains DNSBL servers. Enter the domain that is maintaining a DNSBL. Use this section to set how the Zyxel Device is to handle spam mail. Select how the Zyxel Device is to handle spam SMTP mail. Select drop to discard spam SMTP mail. Select forward to allow spam SMTP mail to go through. POP3 Select forward with tag to add a spam tag to an SMTP spam mail's mail subject and send it on to the destination. Select how the Zyxel Device is to handle spam POP3 mail. Select forward to allow spam POP3 mail to go through. Select forward with tag to add a spam tag to an POP3 spam mail's mail subject and send it on to the destination. Log Select whether to have the ZyXEL device generate a log (log), log and alert (log alert) or neither (no) by default when traffic matches a signature in this category. ZyWALL ATP Series User's Guide 621