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  • block port 25 -- clean up exchange queues

    First of all thanks to Mr. Simon and Mr. Petri for providing valuable information in the blogs as I was able to resolve a issue pertaining to a authenticated relay attack at my work place. A domain user "info" was being used. I used the information from the following article.

    http://www.amset.info/exchange/spam-cleanup.asp

    Now I have around 67 queues and around 80 messages in them to be deleted. I read about blocking port 25 and cleaning up the queues. Can you please guide me on how to block port 25 and re-open it ?

    what will happen if I do not close port 25 and perform the clean up action late in the night or early in the morning when there are no outgoing emails

  • #2
    Re: block port 25 -- clean up exchange queues

    If its Exchange 2003 / 2003 Server then you should just need to stop the SMTP service, if its exchange 2007 then stop the Microsoft Exchange Transport service.

    Once you have finished, just restart the service to resume mail flow.

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    • #3
      Re: block port 25 -- clean up exchange queues

      Apology to miss out on that information. We are running Exchange 2003 E.E. on Windows server 2003. If I only need to stop SMTP service then what about blocking the port 25 ?

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      • #4
        Re: block port 25 -- clean up exchange queues

        Port 25 should be blocked on the firewall for cleaning up, rather than on the server itself.

        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.

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        • #5
          Re: block port 25 -- clean up exchange queues

          freakinup4u - it depends on how your firewall is controlled. if it's a cisco roter, it might be as simple as "no ip nat inside source static tcp x.x.x.x 25 y.y.y.y 25" where x is your internal and y is your external ip address

          that will block it for you, or, more correctly, it will remove the reverse-NAT entry..check with your comms guys ?
          Please do show your appreciation to those who assist you by leaving Rep Point https://www.petri.com/forums/core/im.../icon_beer.gif

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          • #6
            Re: block port 25 -- clean up exchange queues

            Thanks for the information. The queues on the server automatically got decreased and I am only left with the legimate queues.

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            • #7
              Re: block port 25 -- clean up exchange queues

              Hi,

              Also make use of Spam Filtering options provided with Exchange 2003 SP2 and configure them unless you have some other anti spam tool with you. It may happen that your exchange server may again get spam and queues will start building up.
              Thanks & Regards
              v-2nas

              MCTS 2008, MCTIP, MCSE 2003, MCSA+Messaging E2K3, MCP, E2K7
              Sr. Wintel Eng. (Investment Bank)
              Independent IT Consultant and Architect
              Blog: http://www.exchadtech.blogspot.com

              Show your appreciation for my help by giving reputation points

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              • #8
                Re: block port 25 -- clean up exchange queues

                We are using Trend Micro Spam filter to take care of the spam. IMF is not configured as of now. Till now Trend Micro has been doing a good job against fighting spam.

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