Postfix Issues - 2 Servers, 1 Router

Discussion in 'Server Operation' started by 3DPeruna, Jun 18, 2012.

  1. 3DPeruna

    3DPeruna New Member

    I have two servers that sit behind a Cisco router. I'm having problems sending email between them. Both can be seen from the internet and both can send/receive email to domains that aren't on either server. But neither can send email to an address on the other server.

    Both are running ISPConfig 3, too.

    Server1 has an external IP address. Server2 has an internal IP address that uses a NAT to pass it through to it's static IP.

    When mail is sent from Server1 to Server2 (or vice versa), I get a [email protected] mail for loops back to myself error.

    Last edited: Jun 18, 2012

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