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Re: Strange bounce message

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  • Roland De Leper
    Hi wietse, Thanks for your support. I know what to do now. Regards, Roland de lepper Verstuurd vanaf mijn iPad
    Message 1 of 4 , Apr 2 7:04 AM
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      Hi wietse,

      Thanks for your support. I know what to do now.

      Regards,

      Roland de lepper

      Verstuurd vanaf mijn iPad

      Op 2 apr. 2013 om 15:53 heeft Wietse Venema <wietse@...> het volgende geschreven:

      > In your second bounce message example, at the end of the DATA
      > command, the bounce message shows that server and client are out
      > of step.
      >
      > LINE BREAK HERE
      >
      > <s.dewaele@...>: host 129.50.20.41[129.50.20.41]
      > said:* 552 5.2.2 r.beerens@... Quota Exceeded (in
      > reply to end of DATA command)
      >
      > LINE BREAK HERE
      >
      > <s.kersten@...>: host 129.50.20.41[129.50.20.41] said:
      > 552 5.2.2 s.dewaele@... Quota Exceeded (in reply to
      > end of DATA command)
      >
      > LINE BREAK HERE
      >
      > I replaced the domain with "example".
      >
      > This shows two things:
      >
      > LINE BREAK HERE
      >
      > 1) Postfix uses the LMTP protocol to deliver mail to the remote
      > server at 129.50.20.41. Unlike SMTP this has one "end of data"
      > response per recipient.
      >
      > LINE BREAK HERE
      >
      > 2) The responses reveal that the remote LMTP server at 129.50.20.41
      > is out of step with the Postfix LMTP client (replies for one
      > recipient are sent in place of another recipient). The Postfix
      > LMTP client code is 10+ years old. I therefore suspect bugs in
      > the remote remote LMTP server. You can demonstrate this with a
      > network sniffer (http://www.postfix.org/DEBUG_README.html#sniffer,
      > replace 25 with the port number that you use for LMTP)
      >
      > LINE BREAK HERE
      >
      > You may be able to prevent the "out of step" problem by turning off
      > PIPELINING support.
      >
      > LINE BREAK HERE
      >
      > /etc/postfix/main.cf:
      >
      > LINE BREAK HERE
      >
      > # Work around for buggy LMTP servers that mis-implement RFC 2920.
      >
      > LINE BREAK HERE
      >
      > lmtp_discard_lhlo_keywords = pipelining
      >
      > Wietse
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