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  • Message labs - spam blocking?!

    Hi again. Another issue has arisen
    I feel its probably coincidental that its happened now, but maybe not.
    I'm getting the following message from only a few certain domains when I try to send them emails from our domain:
    Code:
    < ougoing.email.server #5.0.0 X-Postfix; host relay.star.co.uk[62.231.131.195] said:
    553-Message filtered. Please see the FAQs section on spam 553-at
    http://www.messagelabs.com/support/ for more 553 information. (#5.7.1) (in
    reply to end of DATA command)>
    I'm guessing that its only relay/email servers that are using the messagelabs spam filtering. I've tried contacting messagelabs to see what the problem is, but does anyone have any idea how I can bypass this, or speed up our removal from this spam list, as we cannot currently contact several important clients.
    James
    MCP

  • #2
    Re: Message labs - spam blocking?!

    Does your domain have properly published an SPF record?

    Comment


    • #3
      Re: Message labs - spam blocking?!

      Message Labs run their own blacklists, probably based on a mix of what they see themselves and others.

      Have you checked whether your IP address is listed in any blacklists?

      As an interim, use an SMTP Connector to route email via your ISPs SMTP Server. If the messages still bounce, then they are blacklisting your actual domain.

      You are fortunate to get an NDR. I email anyone on Message Labs and my messages just go in to a blackhole never to be seen again.

      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


      • #4
        Re: Message labs - spam blocking?!

        Originally posted by Sembee View Post
        Message Labs run their own blacklists, probably based on a mix of what they see themselves and others.

        Have you checked whether your IP address is listed in any blacklists?

        As an interim, use an SMTP Connector to route email via your ISPs SMTP Server. If the messages still bounce, then they are blacklisting your actual domain.

        You are fortunate to get an NDR. I email anyone on Message Labs and my messages just go in to a blackhole never to be seen again.

        Simon.
        I'm betting it's the ISP SMTP server that's on the black list. Someone the ISP hosts is a spammer. One bad apple spoils the whole bushel.
        Cheers,

        Rick

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

        2006-2099 R Valstar. This post is offered "as is" for discussion purposes only with no express or implied warranty of any kind including, but not limited to, correctness or fitness for use. Nothing herein shall be construed as advice. Attempting any activity based on information in this post is done at your own risk.

        Comment


        • #5
          Re: Message labs - spam blocking?!

          yeah its already going thru the ISP's SMTP.

          What a nightmare!! I think you are correct about the ISP having one spammer or something. I'm in contact with them to try and get this sorted asap.

          I dont suppose there is any way of connecting to another SMTP server is there? Do any companies/Individuals offer that kind of thing, to overcome this blacklisting issue?
          James
          MCP

          Comment


          • #6
            Re: Message labs - spam blocking?!

            Originally posted by swfblade View Post
            yeah its already going thru the ISP's SMTP.

            What a nightmare!! I think you are correct about the ISP having one spammer or something. I'm in contact with them to try and get this sorted asap.

            I dont suppose there is any way of connecting to another SMTP server is there? Do any companies/Individuals offer that kind of thing, to overcome this blacklisting issue?
            I don't believe you will be successful getting your ISP off blacklists in general.

            At least Message labs sends you a reply. There are a number of other spam filters that block / trash the emails and never let the sender know.

            Hopefully one of our talented exchange experts knows how to get around using your ISP's SMTP.

            I'm certainly interested in learning how.
            Cheers,

            Rick

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

            2006-2099 R Valstar. This post is offered "as is" for discussion purposes only with no express or implied warranty of any kind including, but not limited to, correctness or fitness for use. Nothing herein shall be construed as advice. Attempting any activity based on information in this post is done at your own risk.

            Comment


            • #7
              Re: Message labs - spam blocking?!

              There are lots of services that will allow you to bounce email off their servers. They are not free of course. Google for mail hop services. They are usually used by people who use an ISP that blocks port 25 traffic and want to host their own email.

              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


              • #8
                Re: Message labs - spam blocking?!

                cheers for that, i'll look into it
                James
                MCP

                Comment

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