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On Stardate 6609.08, Mrs. Geeta Thanu said: | Hi Gurus, | | We have our primary DNS , webserver, email server everything inside | firewall, all natted to WAN IP. | | Hence our mails are having the originating IP as firewall's IP ad hence | some domains are rejecting our mails. | | The webserver and email servers IP are same since they both are on the | same machine. | | can anybody please guide me what rules I am doing mistake in firewall and | how this problem can be solved.
Based on my understanding of the above (nat'd), all outbound packets from any system behind your firewall *should* have their source IP address rewritten to the public IP address of your firewall.
Exactly what rejection is being logged by *some domains* as you stated above? Can you show the DSN or a logfile entry from maillog? Since you state *some domains* are rejecting e-mail, I suspect that this could be a DNS PTR record problem, not a firewall rule problem.
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