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Incoming maiflow Stuck.

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  • Incoming maiflow Stuck.

    Incoming maiflow Stuck.

    When we try to telnet hub transort on 25 port following error gives:

    421 4.3.2 Service not available, closing transmission channel

    HUB is refusing all incomming mails .......

    What are the possible causes for same.

  • #2
    Re: Incoming maiflow Stuck.

    1. Check the connection with the AD & mailbox role servers
    2. Run the EXBPA and search for the problem.
    CNE 5, CCA, MCSE NT4.0-2003, MCSE 2003 messaging, Exchange Server MVP.
    Tzahi Kolber - IT Supervisor
    Polycom Israel.

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    • #3
      Re: Incoming maiflow Stuck.

      Run the following script

      Test-ServiceHealth

      Did you cheack the Application logs?
      Regards,
      Csaba Papp
      MCSA+messaging, MCSE, CCNA
      ...............................
      Remember to give credit where credit is due and leave reputation points where appropriate
      .................................

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      • #4
        Re: Incoming maiflow Stuck.

        Also, look at the Exchange 2007 Toolbox and use the ExTRA tools to troubleshoot mailflow problems. Do you currently see all your mail in the Queue?

        Do a Netstat -a. Does it show port 25 as listening?

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