Questions

Merak Mail Server (550.5.7.1 error)

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Merak Mail Server (550.5.7.1 error)

DetroitPistons
Hello,

we are using Merak Mail server 9.1.1, only a few user in the company receives this error (550.5.7.1 we do not relay)
I've been getting some directions from Merak support team however nothing is working been going for almost a month now.


10.100.100.1 [0E1C] 14:11:05 Connected
10.100.100.1 [0E1C] 14:11:05 >>> 220 mail.mydomain.com SMTP IceWarp 9.1.1; Mon, 31 Mar 2008 14:11:05 -0400
10.100.100.1 [0E1C] 14:11:05 <<< EHLO [10.100.100.1]
10.100.100.1 [0E1C] 14:11:05 >>> 502 5.5.1 Sorry, we do not support this operation
10.100.100.1 [0E1C] 14:11:05 <<< HELO [10.100.100.1]
10.100.100.1 [0E1C] 14:11:05 >>> 250 mail.mydomain.com Hello [10.100.100.1] [10.100.100.1], pleased to meet you.
10.100.100.1 [0E1C] 14:11:07 <<< MAIL FROM:<domain_user@mydomain.com>
10.100.100.1 [0E1C] 14:11:07 >>> 250 2.1.0 <domain_user@mydomain.com>... Sender ok
10.100.100.1 [0E1C] 14:11:07 <<< RCPT TO:<client_user@myclient.com>
10.100.100.1 [0E1C] 14:11:07 >>> 550 5.7.1 <client_user@myclient.com>... we do not relay <domain_user@mydomain.com

Any help/suggestions on this issue would be much appreciated

Thanks
  • +
    0 Votes
    Dumphrey

    in Exchange Server 2003. It turns out it was due to the external DNS server we were using was flakey, and would simply refuse to locate some external domains. I changed the server and problem went away. I know this probably does not help, but looking at dns resoultion for the problem addresses may get you in the right direction. A packet capture of the process may help as well, so you can see the full traffic pattern and conversation.

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    0 Votes
    DetroitPistons

    it seem to be working now, I uncheck the DENY SMTP EHLO command in the security setting and also disable the Use TLS/SSL option

  • +
    0 Votes
    Dumphrey

    in Exchange Server 2003. It turns out it was due to the external DNS server we were using was flakey, and would simply refuse to locate some external domains. I changed the server and problem went away. I know this probably does not help, but looking at dns resoultion for the problem addresses may get you in the right direction. A packet capture of the process may help as well, so you can see the full traffic pattern and conversation.

    +
    0 Votes
    DetroitPistons

    it seem to be working now, I uncheck the DENY SMTP EHLO command in the security setting and also disable the Use TLS/SSL option