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  • 503 MAIL first (#5.5.1)"

    Getting this error message when sending from Exchange Server 2007 to a particular domain.
    An extract from SmtpSend follows:


    Code:
    2010-09-27T13:19:20.841Z,SMTP Internet Connector,08CD29039E04F6B2,1,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,+,,
    2010-09-27T13:19:21.012Z,SMTP Internet Connector,08CD29039E04F6B2,2,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,<,220 mail312.remotedomain.com ESMTP,
    2010-09-27T13:19:21.012Z,SMTP Internet Connector,08CD29039E04F6B2,3,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,>,EHLO mail.sendingdomain,
    2010-09-27T13:19:21.169Z,SMTP Internet Connector,08CD29039E04F6B2,4,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,<,250-mail312.remotedomain.com,
    2010-09-27T13:19:21.169Z,SMTP Internet Connector,08CD29039E04F6B2,5,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,<,250-PIPELINING,
    2010-09-27T13:19:21.169Z,SMTP Internet Connector,08CD29039E04F6B2,6,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,<,250-8BITMIME,
    2010-09-27T13:19:21.169Z,SMTP Internet Connector,08CD29039E04F6B2,7,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,<,250-SIZE 0,
    2010-09-27T13:19:21.169Z,SMTP Internet Connector,08CD29039E04F6B2,8,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,<,250 AUTH LOGIN PLAIN CRAM-MD5,
    2010-09-27T13:19:21.169Z,SMTP Internet Connector,08CD29039E04F6B2,9,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,*,694551,sending message
    2010-09-27T13:19:21.169Z,SMTP Internet Connector,08CD29039E04F6B2,10,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,>,MAIL FROM:<[email protected]> SIZE=86866,
    2010-09-27T13:19:21.169Z,SMTP Internet Connector,08CD29039E04F6B2,11,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,>,RCPT TO:<[email protected]>,
    2010-09-27T13:19:21.169Z,SMTP Internet Connector,08CD29039E04F6B2,12,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,>,RCPT TO:<[email protected]>,
    2010-09-27T13:19:21.325Z,SMTP Internet Connector,08CD29039E04F6B2,13,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,<,504 Authenticate first (#5.5.0),
    2010-09-27T13:19:21.340Z,SMTP Internet Connector,08CD29039E04F6B2,14,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,<,503 MAIL first (#5.5.1),
    2010-09-27T13:19:21.340Z,SMTP Internet Connector,08CD29039E04F6B2,15,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,<,503 MAIL first (#5.5.1),
    2010-09-27T13:19:21.340Z,SMTP Internet Connector,08CD29039E04F6B2,16,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,>,QUIT,
    2010-09-27T13:19:21.497Z,SMTP Internet Connector,08CD29039E04F6B2,17,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,<,221 mail312.remotedomain.com,
    2010-09-27T13:19:21.497Z,SMTP Internet Connector,08CD29039E04F6B2,18,xxx.xxx.xxx.xxx:16745,yyy.yyy.yyy.yyy:25,-,,Local
    Any clue? Thanks in advance

  • #2
    Re: 503 MAIL first (#5.5.1)&quot;

    The other side has authentication turned on. Nothing to do with your configuration. It is their problem.

    Simon.
    --
    Simon Butler
    Exchange MVP

    Blog: http://blog.sembee.co.uk/
    More Exchange Content: http://exchange.sembee.info/
    Exchange Resources List: http://exbpa.com/
    In the UK? Hire me: http://www.sembee.co.uk/

    Sembee is a registered trademark, used here with permission.

    Comment


    • #3
      Re: 503 MAIL first (#5.5.1)&quot;

      Originally posted by Sembee View Post
      The other side has authentication turned on. Nothing to do with your configuration. It is their problem.

      Simon.
      Hi Sembee,
      thanks for your reply.
      I've forwarded my request to recipient's IT Department. Answer follows:

      Code:
      The issue you have faced with is related to the fact that SMTP server you are using to send email tries to deliver email directly to the mail server mail312.domain.com, that is not allowed, but not to domain MX record that is mail312.anotherdomain.com as it should be.
      
      Please contact your SMTP server provider and ask them to check this issue from their end and verify why emails are sent to wrong server.
      Not sure what I have to do...

      Comment


      • #4
        Re: 503 MAIL first (#5.5.1)&quot;

        Finger pointing.
        Presuming that you are using DNS for delivery, you would have to query the MX records for that domain and see if the server they have reported is shown in the MX records. Could be by host or by the subsequent DNS lookup on the host is pointing to the wrong IP address.

        Exchange does not deliver to a random host name, so it would still point to a problem with the other side, inaccurate DNS records, or DNS records configured incorrectly. Again out of your control.

        Simon.
        --
        Simon Butler
        Exchange MVP

        Blog: http://blog.sembee.co.uk/
        More Exchange Content: http://exchange.sembee.info/
        Exchange Resources List: http://exbpa.com/
        In the UK? Hire me: http://www.sembee.co.uk/

        Sembee is a registered trademark, used here with permission.

        Comment


        • #5
          Re: 503 MAIL first (#5.5.1)&quot;

          Originally posted by Sembee View Post
          Finger pointing.
          Presuming that you are using DNS for delivery, you would have to query the MX records for that domain and see if the server they have reported is shown in the MX records. Could be by host or by the subsequent DNS lookup on the host is pointing to the wrong IP address.

          Exchange does not deliver to a random host name, so it would still point to a problem with the other side, inaccurate DNS records, or DNS records configured incorrectly. Again out of your control.

          Simon.
          Hi Simon, thank you for your assistance.
          Just to add some elements.
          This is the answer by ISP technician:


          Unfortunately this is how our mail servers configured, all mails should be sent to the mail312.anotherdomain.com (this is server alias) instead of mail312.domain.com (the original server name). We are using IronPort antispam tool on mail servers and it's associated with mail312.anotherdomain.com, that's exactly why all messages should be send to this server. That's why we kindly ask you to contact your SMTP server provider and ask them to help you with this issue.
          Let us know if you need any other assistance - we will help you shortly.


          I don't think I should ask something to my ISP (furthermore, it is a nationwide ISP so it's pretty hard that they're gonna care about my request).
          Are you still convinced that it's not my fault?

          Comment


          • #6
            Re: 503 MAIL first (#5.5.1)&quot;

            Without knowing the domain, it is hard to say.
            However if that server is listed in their MX records, then email will be sent to it. It is their problem that they have their DNS configured correctly.

            ISPs do not decide where email is delivered to, the recipient does via DNS records.

            Telling you to speak to your ISP is a waste of time.

            Simon.
            --
            Simon Butler
            Exchange MVP

            Blog: http://blog.sembee.co.uk/
            More Exchange Content: http://exchange.sembee.info/
            Exchange Resources List: http://exbpa.com/
            In the UK? Hire me: http://www.sembee.co.uk/

            Sembee is a registered trademark, used here with permission.

            Comment

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