Announcement

Collapse
No announcement yet.

Email bounce back

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Email bounce back

    One of the user send email to recepient but receive this

    >There was a SMTP communication problem with the recipient's email
    > server. Please contact your system administrator.
    > <x.x.x.x #5.5.0 smtp;550 <[email protected]>:
    > Recipient address rejected: unknown user>

    Send using gmail or yahoo also keep bounce back.

    Done smtpdiag and this is the result:

    Checking MX servers listed for [email protected].
    Connecting to mx.kkk.kk.kk [x.x.x.x] on port 25.
    Error: Expected "250". Server rejected the recipient address.
    Failed to submit mail to mx.kkk.kk.kk

    What could be wrong??

  • #2
    Re: Email bounce back

    Thre problem is there appears to be no recipient with the email address you're sending to.

    Comment


    • #3
      Re: Email bounce back

      yes - there is no recipient matching that address.
      Please do show your appreciation to those who assist you by leaving Rep Point https://www.petri.com/forums/core/im.../icon_beer.gif

      Comment


      • #4
        Email bounce

        This is the bounce back

        I done smtpdiag and the result is success

        [email protected] on 10/25/2010 8:14 AM
        The e-mail account does not exist at the organization this message was sent to. Check the e-mail address, or contact the recipient directly to find out the correct address.
        <4.4.4.4 #5.1.1 smtp;550 5.1.1 <[email protected]>... User unknown>

        Any suggestion?

        Comment


        • #5
          Re: Email bounce

          Does the user 222 exist in the domain 222 (or more importantly, does user 222 have a mailbox attached to it)?

          Can we have more info? As it stands, I can make this to mean about 10 different questions, and now we have to waste both of our time, mine asking for more info, then waiting for you to get back, yours waiting to hear back, then posting, then waiting to hear back again.
          You can never put too much info into a OP. Give us the firmware on the server and we will thank you, rather then question you.

          Below are some questions/test to answer.

          Are you testing sending to your own server, or is this a bounce that one of your users has recieved?

          If its to your own server, check to make sure that user has a mailbox thats active and connected?

          If its to someone else server, then there is a good chance that user no longer has a mailbox (or the mailbox does not exist/have premissions to it)?

          The SMTP test really should not test if a user exists, as it will test the connectivity to the domain (main mail server), the bounce is saying that it can not find the users mailbox. It can find the domain (as its there mailserver telling you that it can not find the mailbox), but the maibox does not exist, has incorrect premissions, is closed or unmounted.

          Wofen
          Good to be back....

          Comment


          • #6
            Re: Email bounce

            The email is send from my server to someone esle server.

            I done smtpdiag from my email to the problem email.


            Searching for Exchange external DNS settings.
            Computer name is MAIL.
            VSI 1 has the following external DNS servers:
            a,a,a,a

            Checking SOA for ao.kwe.com.
            Checking external DNS servers.
            Checking internal DNS servers.
            SOA serial number match: Passed.

            Checking local domain records.
            Checking MX records using TCP: 123.
            Checking MX records using UDP: 123.
            Both TCP and UDP queries succeeded. Local DNS test passed.

            Checking remote domain records.
            Checking MX records using TCP: 222.
            Checking MX records using UDP: 222.
            Both TCP and UDP queries succeeded. Remote DNS test passed.

            Checking MX servers listed for [email protected].
            Connecting to 222 [x.x.x.x] on port 25.
            Error: Expected "250". Server rejected the recipient address.
            Failed to submit mail to 222
            Connecting to 222 [x.x.x.x] on port 25.
            Error: Expected "250". Server rejected the recipient address.
            Failed to submit mail to 222.

            Previously the recipient email is OK, currently can't send to the email.

            Is the problem with my server or the recipient email??
            There are 2 user email that having the same problem.
            [email protected] and [email protected] and both from the same domain.

            Comment


            • #7
              Re: Email bounce

              Originally posted by necro View Post
              Checking MX servers listed for [email protected].
              Connecting to 222 [x.x.x.x] on port 25.
              Error: Expected "250". Server rejected the recipient address.
              Failed to submit mail to 222
              Connecting to 222 [x.x.x.x] on port 25.
              Error: Expected "250". Server rejected the recipient address.
              Failed to submit mail to 222.
              So, you are sending a request to THEIR server.... so this report is from THEIR server.... So the error message saying that it can not find a mailbox is coming from THEIR server.

              1 guess where the problem is...

              Wofen
              Good to be back....

              Comment


              • #8
                Re: Email bounce

                Is there any reason you double posted this ?

                We already replied once, and said it was a recipient problem.
                Do you need to keep opening threads with the same subject? We're not going to give you a different answer.
                Please do show your appreciation to those who assist you by leaving Rep Point https://www.petri.com/forums/core/im.../icon_beer.gif

                Comment


                • #9
                  Re: Email bounce back

                  Threads merged.

                  Opening new threads asking the same thing is a waste of time, as already pointed out, it will not result in a different answer.

                  Simon
                  Exchange forum moderator.
                  --
                  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

                  Working...
                  X