Results 1 to 2 of 2

Thread: no mailbox found when mailing a client

  1. #1
    Join Date
    Sep 2008
    Rep Power

    Default no mailbox found when mailing a client

    Hi all,

    I am having a problem mailing one of my clients. I am fairly sure that the problem is on his side but he assures me he can receive emails from everybody else.

    Here is the message I get:

    <>: host[] said: 550 sorry, no mailbox here by that name. (#5.7.17) (in reply to RCPT TO command)
    Of course, I can send to everybody else except to him... so who is in the wrong?

    I did a little research and found the following which seems all wrong to me but hey, he gets emails so maybe I am in the wrong.

    I checked to make sure the IP above did point to the clients domain (

    $ host
    Now I see it points to OVH which is a French hosting provider. So where does the domain name point to?

    $ dig      86400   IN      A
    Now I try and telnet to test it and find out that there is yet another hosting provider '':

    $ telnet 25
    Connected to
    Escape character is '^]'.
    220 ESMTP Postfix
    The domain points to another IP than the one mentioned in the error. So what is my clients MX record pointing to?

    $ dig MX           86400   IN      MX      10
    It's pointing to Scarlet which is a Belgian ISP.

    and what's the IP for the server?

    $ dig          7200    IN      A

    So to me this clearly indicates some serious misconfiguration but then again, I'm no mail guru (yet ).

    Does anyone have a clue why he can receive emails with such a setup and more importantly as he can clearly get them, why I get the above error?

    Any help, explanation, advice is more than welcome. I'm having a hard time sending quotes over gmail!

    Many thanks.
    Last edited by ecobrazim; 07-24-2010 at 01:40 AM.

  2. #2
    Join Date
    Nov 2006
    Rep Power


    Perhaps your client is receiving email from people on the same server ie. his/her colleagues. Without knowing the true domain etc it is impossible to determine where the error lies.

Similar Threads

  1. Replies: 1
    Last Post: 01-13-2009, 07:10 AM
  2. [SOLVED] Zimbra 5.0.10 to 5.0.11 upgrade hanging
    By fizi in forum Installation
    Replies: 9
    Last Post: 12-14-2008, 09:54 PM
  3. Fresh Zimbra installation does not work
    By Datax in forum Installation
    Replies: 4
    Last Post: 08-18-2008, 01:18 PM
  4. Replies: 2
    Last Post: 10-04-2007, 03:20 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts