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08.14.2008 at 07:02AM PDT, ID: 23648107 | Points: 500
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Internal server IP in SMTP header - how to remove using ASA

Asked by busbar in Cisco PIX Firewall, Exchange Email Server, Simple Mail Transfer Protocol (SMTP)

Tags: ,

Hi There,
I have an Exchange 2007 server that sits behind and ASA 5400 device, everything works fine but I have one question, when I inspect the SMTP header sent outsite I find the following:
mail.mydomain.com xxx.xxx.xxx.xxx where xxx.xxx.xxx.xxx is my internal Exchange server IP, this might cause a problem in case some one is doing PTR lookup, so how I can remove it or change it to be my external IP, smtp fixup is not an option since it breaks lot of SMTP things.

your advice is highly appreciated.Start Free Trial
[+][-]08.14.2008 at 07:16AM PDT, ID: 22230487

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20081112-EE-VQP-44 / EE_QW_2_20070628