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Thread: [SOLVED] SMTP not working internally

  1. #1
    MTecknology is offline Loyal Member
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    Question [SOLVED] SMTP not working internally

    I'm really not sure what's going on here.

    If I telnet into my server from outside of my own network, everything seems to work fine. I see "220 mail.server.com ESMTP Postfix". I sent it EHLO me.local and everything worked perfect.

    If I telnet into my server from one of my other servers, I didn't get the 220 response. I tried my EHLO me.local and got no server response. It used to be working and I'm not sure why it's not working here.

    Setup: I recently installed a GoDaddy certificate which is working perfect.
    MTA:
    Enable Authentication = yes
    TLS authentication only = yes
    Web mail MTA Hostname = localhost
    Web mail MTA Port = 25
    Relay MTA for external delivery = blank
    Web mail MTA timeout (s) = 60
    MTA Trusted Networks = 127.0.0.0/8 192.168.1.0/24 192.168.0.0/24
    - servers use both subnets but primarily .0.*
    Enable DNS lookups = yes

    This exact setup had been working for a long time now.

    Hopefully this is enough information to help somebody help me.

    Thanks,
    -Mike
    Last edited by MTecknology; 08-28-2008 at 12:00 AM.

  2. #2
    uxbod's Avatar
    uxbod is offline Moderator
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    Default

    Are you running a firewall on the server ? Are your other servers on the same network or is ZCS either VLANd or in a DMZ ? Can you ping the ZCS server from another server ?

  3. #3
    MTecknology is offline Loyal Member
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    Default Network activity

    Nope, there's not firewall inside the network. I can ping the server just fine. They are also all in the same subnet.

  4. #4
    MTecknology is offline Loyal Member
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    Default Interesting Fix

    Well, it's not working correctly, but the initial problem is fixed so I'll just open a fresh post.

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