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ASA esmtp inspection

Posted on 2013-10-23
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Last Modified: 2013-10-26
Hi

My mail server is behind a Cisco asa version 9.
I cannot send mail when esmtp inspection is enable on firewall using ports 465.
My question is how can I get e-mail working with esmtp inspection enabled as it now using having a firewall when security feature are disabled.
Please help someone
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Question by:ciscosupp
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LVL 12

Expert Comment

by:Henk van Achterberg
ID: 39596383
In ASDM you are able to create  custom ESMTP rule "map".

Please look at the picture I created for you.
asa-esmtp.png
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Expert Comment

by:fgasimzade
ID: 39596427
My personal advice - disable emstp inspection
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Expert Comment

by:Henk van Achterberg
ID: 39596461
fgasimzade: I think the topic starter does know that disabling works but would like to use this security feature.

Disabling this feature is the "lazy" approach. When you want to enforce strict security ESMTP  inspection is a real good enforcement tool.

But with everything you enforce you will get extra support tickets when someone does not get through. That is why logging is very important!
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Author Comment

by:ciscosupp
ID: 39596748
thanks fgasimzade

how can I do it via command line and what must I change
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Expert Comment

by:fgasimzade
ID: 39596821
conf t
policy-map global_policy
 class inspection_default
no inspect esmtp
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Accepted Solution

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Henk van Achterberg earned 500 total points
ID: 39596832
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Author Comment

by:ciscosupp
ID: 39596844
mean thanks  henkva

how can I create a custom ESMTP rule via command line
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Author Comment

by:ciscosupp
ID: 39596847
ok thanks for link will check it out
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Author Comment

by:ciscosupp
ID: 39603154
policy-map type inspect esmtp tls-esmtp
parameters
allow-tls
inspect esmtp tls-esmtp


works perfect
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