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Block outbound email

Posted on 2009-07-06
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Last Modified: 2012-05-07
I have a Cisco ASA 5520 and I would like to block all outgoing SMTP that's not from the mail server.  What's the command to do so?
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Question by:jfahern
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rvthost earned 500 total points
ID: 24790714
access-list InsideACL extended permit tcp host x.x.x.x any eq smtp (where x.x.x.x is the ip of your mail server)
access-list Inside ACL extended deny tcp any any eq smtp

Ref doc:

http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a0080862017.shtml
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Author Closing Comment

by:jfahern
ID: 31600439
That was fast, thanks!
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