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  • Messages are getting queued

    Hi
    We have just started to see outgoing to the internet messages getting queued up. Every thing was fine until 2 days ago. Incoming and internal mail is ok. We get the following error in the queue viewer on the Ex2k10 box
    451 4.4.0 Primary target IP address responded with "421 4.2.1 Unable to connect. "Attempted to failover to alternate host, but that did not succeed. Either there are no alternate hosts, or delivery failed to all altenate host.

    any ideas
    Thanks in advance

  • #2
    Re: Messages are getting queued

    Are you using a smarthost or direct delivery?

    I'm guessing a smarthost, if so, check with the provider if they have changed things without bothering to tell you, and change to direct delivery for the moment
    Tom Jones
    MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
    PhD, MSc, FIAP, MIITT
    IT Trainer / Consultant
    Ossian Ltd
    Scotland

    ** Remember to give credit where credit is due and leave reputation points where appropriate **

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    • #3
      Re: Messages are getting queued

      hi
      were using direct not a smarthost

      Comment


      • #4
        Re: Messages are getting queued

        is this for ALL outgoing messages?
        If so, are you blacklisted?

        (are you using some sort of external firewall / spam filter / proxy as a smarthost from Exchange?)
        Tom Jones
        MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
        PhD, MSc, FIAP, MIITT
        IT Trainer / Consultant
        Ossian Ltd
        Scotland

        ** Remember to give credit where credit is due and leave reputation points where appropriate **

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        • #5
          Re: Messages are getting queued

          we are not blacklisted.
          The mail (going to gmail) is not even getting to the asa firewall. After running the troubleshooting assistant under Remote SMTP Status we see
          Name: alt1.gmail-smtp-in.l.google.com
          Port 25 did not respond on server alt1.gmail-smtp-in.l.google.com. Unless the SMTP port has been changed on alt1.gmail-smtp-in.l.google.com, mail flow problem will occurr. and
          Mail acceptance failure:
          Remote server alt1.gmail-smtp-in.l.google.com failed the mail acceptance test when trying to open the remote socket: Respond = remote socket is not available

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          • #6
            Re: Messages are getting queued

            Is it just for gmail or is it for all outgoing mail?
            Tom Jones
            MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
            PhD, MSc, FIAP, MIITT
            IT Trainer / Consultant
            Ossian Ltd
            Scotland

            ** Remember to give credit where credit is due and leave reputation points where appropriate **

            Comment


            • #7
              Re: Messages are getting queued

              it's all out going, incoming is ok and internal is ok
              If I telnet to the box after I enter rcpt to:[email protected] i get the responce
              550 5.7.1 unable to relay

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              • #8
                Re: Messages are getting queued

                Hi
                anyone got any ideas?
                THanks

                Comment


                • #9
                  Re: Messages are getting queued

                  Which box have you used telnet testing?

                  If it's something from your own infrastructure we are talking about a smarthost, if it's the mail server from google mail the answer is expected. No one (at least mail admins with some brain) will let you relay through their servers.

                  Comment


                  • #10
                    Re: Messages are getting queued

                    Originally posted by cbcict View Post
                    Hi
                    anyone got any ideas?
                    THanks
                    Try this:
                    http://support.microsoft.com/default...b;en-us;320027

                    Please do read "Warning" section under Resolution before making any changes. If the change fixes the issue then you should consider checking your firewalls Mailgaurd features and make changes according to guidance provided by device manufacturer.

                    Cheers
                    Last edited by jedi001; 7th September 2011, 17:18. Reason: Adding more info
                    Technical Director
                    www.tecguruz.com
                    Ex-Microsoft (Exchange Client & Server Infrastructure Team), MCSA, MCSE, MCITP, MCTS & ITIL Foundation certified

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