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Cant send to one domain (sometimes)

Discussion in 'General Discussion' started by InternetPEI, Dec 2, 2006.

  1. InternetPEI

    InternetPEI Well-Known Member

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    About half the email to this one server in new zealand are failing. This has been working on and off since I did a server switch around Nov 01. I have new ips.

    Any suggestions? I emailed them back in early nov and they said they are running strict rules on their mail server for spam. The emails sent to them are to 2 clients and none of my ips were listed in any spam lists..

    Anything I can do on my end to help make these go through better?

    Thanks Jason


    Message 1GpzT0-0000Az-T3 is not frozen
    delivering 1GpzT0-0000Az-T3
    Connecting to mail.ps.gen.nz [202.49.233.1]:25 ... connected
    SMTP<< 220 apollo.ps.net.nz ESMTP Sendmail 8.13.4/8.13.4/Debian-3sarge3; Sun, 3 Dec 2006 11:21:17 +1300; (No UCE/UBE) logging access from: MYSERVER(OK)-MYSERVER [MY IP]
    SMTP>> EHLO MYSERVER
    SMTP<< 250-apollo.ps.net.nz Hello MYSERVER [MY IP], pleased to meet you
    250-ENHANCEDSTATUSCODES
    250-PIPELINING
    250-EXPN
    250-VERB
    250-8BITMIME
    250-SIZE
    250-DSN
    250-ETRN
    250-DELIVERBY
    250 HELP
    SMTP>> MAIL FROM:<myclient> SIZE=3680
    SMTP>> RCPT TO:<persontheyaresendingto>
    SMTP>> DATA
    SMTP<< 250 2.1.0 <myclient>... Sender ok
    SMTP<< 451 4.1.8 Domain of sender address (myclient) does not resolve
    SMTP<< 503 5.0.0 Need RCPT (recipient)
    SMTP>> QUIT
    LOG: MAIN
    == persontheyaresendingto R=lookuphost T=remote_smtp defer (-44): SMTP error from remote mail server after RCPT TO:<persontheyaresendingto>: host mail.ps.gen.nz [202.49.233.1]: 451 4.1.8 Domain of sender address myclient does not resolve
    Return to Mail Queue
     
  2. celliott

    celliott Well-Known Member

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    This answers your question:

    SMTP<< 451 4.1.8 Domain of sender address (myclient) does not resolve

    Make sure that the sender domain exists and appropriate DNS entries exist on your server.
     
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