04-01-2008 03:26 PM - edited 02-21-2020 01:57 AM
We are having Reverse DNS issues.
10.10.0.10 = Exchange Server
Windows 2003 = DNS server internal.
Setup: 1 to 1 NAT
10.10.0.10 smtp --> 70.89.133.218 smtp
Int gi0/2 = 70.89.133.217
Incoming Access Rule:
any --> 70.89.133.218 smtp permit
When we do a WhatismyIp on exchange server it says the IP is 70.89.133.217
It should be 70.89.133.217.
This is causing our email to be rejected from external sites due to reverse dns not returning 218. External people say are email is coming from 217. Comcast says the reverse pointer is setup correctly.
What are we doing wrong?
Thanks for any help you can offer.
04-01-2008 03:28 PM
Correction:
When we do a WhatismyIp on exchange server it says the IP is 70.89.133.217
It should be 70.89.133.218
217 is the interface gi0/2 on the ASA.
04-01-2008 04:45 PM
Can you show the specific "static" entry in your config for the NAT you're attempting?
09-27-2011 09:10 AM
did you ever figure out this thing with the reverse DNS showing PAT ip and not that of external MX record? What was the solution? Having same issue.
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