Filtering Email By Address Pattern - Watchguard Firebox X20E User Manual

Configuring the SMTP Proxy

Filtering email by address pattern

The options on the SMTP Addressing tab allow you to put limits on who can send email to your email
server, and who can receive the email.
Block email from unsafe senders
Select this check box if you want to put limits on email to allow email into your network only
from specified senders. The default configuration allows email from all senders.
Limit email recipients
Select this check box if you want to allow email to only some of the users on your network. This
can be useful if you want to prevent people from using your email server for email relaying. To do
this, make sure that all domains for which your email server accepts email messages appear in
the rule list. Make sure you use the wildcard format such as *@mywatchguard.com. Any email
with an address that does not match the listed domains is denied.
Filtering email content
Certain kinds of content embedded in email can be a security threat to your network. Other kinds of
content can decrease the productivity of your users. On the SMTP Content tab, you limit content
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