#5.1.1 SMTP; 550 Your HELO name for IP address was "smtp"

Discussion in 'Installation/Configuration' started by nenad, Jul 9, 2006.

  1. nenad

    nenad ISPConfig Developer ISPConfig Developer


    today I found that my server is (was) blacklisted due to "spam" (which is not the case) or trojan (which is not the case) or misconfiguration of smtp server.

    How to exactly chechk what they are atlking about??

    This is the answer that I received from http://cbl.abuseat.org

    (After I complained they removed me from their blacklist, but I would like to prevent such cases, especially becuse besides my IP is smell network, not single machine)

    Which config files shuld I check to see if there is a problem with "localhost.localdomain" as HELLO string?

    As far as I understand those things my server has valid HELLO string, or it does't ?

  2. falko

    falko Super Moderator ISPConfig Developer

    What's the output of
    telnet localhost 25
  3. nenad

    nenad ISPConfig Developer ISPConfig Developer

    server201:~# telnet localhost 25
    Connected to localhost.localdomain.
    Escape character is '^]'.
    220 server201.web-hosting.co.yu ESMTP Postfix (Debian/GNU)


    In the meanwhile, they replied to me. On my network there was one PC infected with trojan, malware whatever, so it was resolved during last 24hrs.

    They confirmed that this: is prefectly good regarding to what is expected from host to reply in HELO statemet :)

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