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11/17/2007 at 01:00PM PST, ID: 22967873
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9.9

How To Use Fixup Protocol SMTP in Cisco ASA 5510

Asked by icarus2256 in Cisco PIX Firewall, Simple Mail Transfer Protocol (SMTP)

Tags: fixup, asa, smtp, cisco, protocol

We have been having issues with Bounced Emails at random and mostly Gmail getting bounced to our Exchange server. We are using Microsoft's FrontBridge Filtering service. They have reccomended the foillowing:  
I have contacted our operations and we were able to determine that this issue that you are experiencing with the deferrals may be due because you are using a Cisco firewall. At this time there is a known compatibility issue between Cisco and Postfix. In order to get this resolved you may want to disabled the fixup protocol on the SMTP.
For further questions in regards to this issue you may want to visit the following link http://support.microsoft.com/kb/295725. Please note that when we do a telnet session we receive the following:

My question, I cannot figure out how to disable the postfix or fixup command. I have tried using this string at the command prompt after ENABLING:  FIXUP PROTOCOL SMTP.
There does not appear to be any command for FIXUP.
I dont see anything on the ASDM GUI either.

** UPDATE **

I was forgetting to issue the: CONFIG T command.
I now was able to issue the FIXUP command and disable the feature.

I would like to get any and all input on this issue if there are others that have some advise.


Please advise.

Thanks.
[+][-]11/17/07 03:31 PM, ID: 20305791

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About this solution

Zones: Cisco PIX Firewall, Simple Mail Transfer Protocol (SMTP)
Tags: fixup, asa, smtp, cisco, protocol
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Solution Provided By: grahamnonweiler
Participating Experts: 4
Solution Grade: A
 
 
[+][-]11/17/07 04:00 PM, ID: 20305859

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[+][-]11/17/07 04:25 PM, ID: 20305921

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[+][-]11/18/07 03:11 AM, ID: 20307234

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[+][-]11/18/07 03:28 AM, ID: 20307275

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[+][-]11/19/07 12:49 PM, ID: 20315323

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[+][-]02/06/08 09:55 PM, ID: 20838568

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