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Forum Discussion

vvskaladhar_488's avatar
vvskaladhar_488
Icon for Nimbostratus rankNimbostratus
Oct 19, 2015

How to insert-f orwarder for port 25

HI All,   I have exchange setup in my environment with SNATAUTOMAP . we see for port 25 there are lot of spam mails in exchange but unable to identify source as we use SNAT. we dont do ssl offload...
Kevin_Stewart's avatar
Kevin_Stewart
Icon for Employee rankEmployee
Oct 19, 2015

XFF is an HTTP header, so no that wouldn't work for port 25 SMTP traffic. You can of course inject a true source into SMTP traffic, but then you'd need some way on the server to understand that additional payload information, which will be a lot less trivial.