Loading ...
Sorry, an error occurred while loading the content.

550-IMAP/POP3: understanding returns/bounces error mssg

Expand Messages
  • lists@...
    I have a low usage workgroup mini mail list with a virtual alias that sends email to 8 or 10 addresses (on other servers), that works well. No changes have
    Message 1 of 4 , Oct 10, 2013
    • 0 Attachment
      I have a low usage 'workgroup' 'mini mail list' with a virtual alias that
      sends email to 8 or 10 addresses (on other servers), that works well. No
      changes have been made to target emails for several month, all's good.

      today I've received two "Undelivered Mail Returned to Sender"
      From: "Mail Delivery System" <MAILER-DAEMON@...>

      it said:

      <jill@...>: host target.tld[69.175.yyy.xxx]
      said: 550-Please turn on SMTP Authentication in your mail client, or
      login to the 550-IMAP/POP3 server before sending your message.
      geko.sbt.net.au 550-[180.235.131.4]:51667 is not permitted to relay
      through this server without 550 authentication. (in reply to RCPT TO
      command)

      more details follow, in the process of attempted self-improvement I'm
      trying to undertand what/why this is happeneing, is this some sort of MS
      exchange (?) server issue ? or do I have some mis-config ?

      thanks

      ----------------------------------
      enclosed delivery status said:

      Reporting-MTA: dns; geko.sbt.net.au
      X-Postfix-Queue-ID: 85C0C3829BB
      X-Postfix-Sender: rfc822; voytek@...
      Arrival-Date: Thu, 10 Oct 2013 18:42:17 +1100 (EST)

      Final-Recipient: rfc822; jill@...
      Original-Recipient: rfc822;minimaillist@...
      Action: failed
      Status: 5.0.0
      Remote-MTA: dns; target.tld
      Diagnostic-Code: smtp; 550-Please turn on SMTP Authentication in your mail
      client, or login to the 550-IMAP/POP3 server before sending your message.
      geko.sbt.net.au 550-[180.235.131.4]:51667 is not permitted to relay
      through this server without 550 authentication.

      looking through logs I see:

      grep 85C0C3829BB /var/log/maillog | grep target.tld

      Oct 10 18:42:17 geko amavis[31410]: (31410-05) Passed CLEAN
      {RelayedInternal,RelayedOutbound}, AUTHENTICATED LOCAL
      [120.158.225.55]:54337 [120.158.225.55] <voytek@...> -> <"several
      addresses">, Message-ID:
      <0a2eceae-9bc3-4e45-9aad-c97faa01c774@...>, mail_id:
      6tvSzZ8wXBWH, Hits: -, size: 208895, queued_as: 85C0C3829BB, 434 ms

      Oct 10 18:42:17 geko postfix/lmtp[3785]: 9C9AC3829BA:
      to=<jill@...>, orig_to=<minimaillist@...>,
      relay=127.0.0.1[127.0.0.1]:10586, delay=6.7, delays=6.2/0.01/0/0.43,
      dsn=2.0.0, status=sent (250 2.0.0 from MTA(smtp:[127.0.0.1]:10025): 250
      2.0.0 Ok: queued as 85C0C3829BB)

      Oct 10 18:42:21 geko postfix/smtp[3793]: 85C0C3829BB:
      to=<jill@...>, relay=target.tld[69.175.yyy.xxx]:25, delay=4.2,
      delays=0.13/0.09/2.6/1.4, dsn=4.0.0, status=deferred (host
      target.tld[69.175.yyy.xxx] said: 451 Temporary local problem - please try
      later (in reply to RCPT TO command))

      several more of same followed by

      Oct 11 10:00:46 geko postfix/smtp[17160]: 85C0C3829BB:
      to=<jill@...>, relay=target.tld[69.175.yyy.xxx]:25, delay=55109,
      delays=55051/0.1/12/46, dsn=5.0.0, status=bounced (host
      target.tld[69.175.yyy.xxx] said: 550-Please turn on SMTP Authentication in
      your mail client, or login to the 550-IMAP/POP3 server before sending your
      message. geko.sbt.net.au 550-[180.235.131.4]:51667 is not permitted to
      relay through this server without 550 authentication. (in reply to RCPT TO
      command))
    • Wietse Venema
      ... What is the real server name? What is the real IP address? Wietse
      Message 2 of 4 , Oct 11, 2013
      • 0 Attachment
        lists@...:
        > <jill@...>: host target.tld[69.175.yyy.xxx]
        > said: 550-Please turn on SMTP Authentication in your mail client, or
        > login to the 550-IMAP/POP3 server before sending your message.
        > geko.sbt.net.au 550-[180.235.131.4]:51667 is not permitted to relay
        > through this server without 550 authentication. (in reply to RCPT TO
        > command)

        What is the real server name?

        What is the real IP address?

        Wietse
      • lists@...
        ... Wietse, thanks, from the log entry: corporatechange.com.au 69.175.105.186 BUT, looking at recent log entries, mail seems now delivered, THOUGH, log now
        Message 3 of 4 , Oct 11, 2013
        • 0 Attachment
          On Fri, October 11, 2013 10:31 pm, Wietse Venema wrote:

          > What is the real server name?
          > What is the real IP address?

          Wietse,

          thanks, from the log entry:

          corporatechange.com.au
          69.175.105.186

          BUT, looking at recent log entries, mail seems now delivered, THOUGH, log
          now show different IP for the server:

          Oct 11 17:56:45 geko postfix/smtp[1927]: 079F23829BA:
          to=<aaa@...>,
          relay=corporatechange.com.au[50.87.106.83]:25, delay=4.6,
          delays=0.05/0.01/1.3/3.3, dsn=2.0.0, status=sent (250 OK
          id=1VUWeS-0006Kx-6R)
        • Wietse Venema
          ... That IP address belongs to Singlehop. ... And that IP address belongs to Unifiedlayer. As required by the SMTP protocol Postfix relies on DNS to deliver
          Message 4 of 4 , Oct 11, 2013
          • 0 Attachment
            lists@...:
            > On Fri, October 11, 2013 10:31 pm, Wietse Venema wrote:
            >
            > > What is the real server name?
            > > What is the real IP address?
            >
            > Wietse,
            >
            > thanks, from the log entry:
            >
            > corporatechange.com.au
            > 69.175.105.186

            That IP address belongs to Singlehop.

            > BUT, looking at recent log entries, mail seems now delivered, THOUGH, log
            > now show different IP for the server:
            >
            > Oct 11 17:56:45 geko postfix/smtp[1927]: 079F23829BA:
            > to=<aaa@...>,
            > relay=corporatechange.com.au[50.87.106.83]:25, delay=4.6,
            > delays=0.05/0.01/1.3/3.3, dsn=2.0.0, status=sent (250 OK
            > id=1VUWeS-0006Kx-6R)

            And that IP address belongs to Unifiedlayer.

            As required by the SMTP protocol Postfix relies on DNS to deliver
            mail. If a DNS server provides incorrect information (intermediate
            DNS resolver or authoritative DNS server) then that is a problem
            that Postfix cannot solve.

            Wietse
          Your message has been successfully submitted and would be delivered to recipients shortly.