Inbound Mail Problem SMTP / Edge to Exchange
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Hi
i try to translate my german thread. it looks like nobody could help me in the german section.Problem: I have a problem to transfer the incoming mail from dmz to lan. (See the attachment)
Edge / DMZ = 10.0.1.5
Exchange = 10.0.10.10
INT-DNS = internal DNS ServerIncoming Mail:
Internet -> DMZ Edge Mailrelay / Mailforwarder -> Exchange Server = all emails stay in queue on DMZ Mailrelay with error "451 4.4.0 DNS query failed"telnet exchange 25 = OK.
telnet exchange 587 = Ok.Outgoing Mail:
Exchange -> DMZ Edge Mailrelay / Mailforwarder -> internet = all mails arrive @recipient / Ok.Rules: @ETH1
Proto SRC Port Dest Port GW
UDP * * Int-DNS 53 *
TCP * * Exchange 25 *
TCP * * Exchange 587 *
TCP DMZ * * 25 WAN1
TCP DMZ * * 587 WAN1Someone an idea? If you need more information about the rules or something pls post…
Thanks for your help...
if you want reply in german: http://forum.pfsense.org/index.php/topic,57002.0.html
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How is the exchange server listed In the mail forwarder? If you put in the ip instead of a name, does the mail flow as expected?
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atm i'm in xmas holidays. I will try to change this option… Do you think the DMZ Server is unable to resolve the the hostname? i write down my experience asap...
Thanks for the fast reply.. merry xmas
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just a guess. the rules seems to be okay. there is probably not any routing problems, so long as everything if using the pfense as its gateway.
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I didn't foud the problem. I solved my problem by installing pfsense 2.0.2 on a different Dell Server with different hardware. That is not really a solution!