can't send email to external users using 3rd party email client RRS feed

  • Question

  • Hi there,

    We have a client that using thunderbird and he can recieve/send email fine (both internal and external users).
    problem starts when we install exchange 2010 (on different server) for testing and suddenly he gets the unable to relay error message if he tried to send email to external users (I don't remember the exact saying since it's in french, but it sounds like he didn't have permission to relay).
    sending email to internally is fine though.

    Some people recommend to check the DNS under exchange mgmt console to see which DNS registered with the server.
    when we check it on exchange 2007, it suddenly pops out quite a few error messages saying something about can't access table name xxx.
    and almost all tabs are not configurable.

    Our exchange 2007 still the main mail server while Exchange 2010 is just standing there.
    but it somehow manage to "integrate" with the current system (recognized other exchange servers, see mailboxes, etc).

    Any thought on this?

    Andrew P.
    Tuesday, April 12, 2011 5:47 AM


  • Apologies for the late reply.

    after several troubleshooting, we just found out that he's using the wrong server as outgoing smtp, which is not allowing external email relay.

    I tried to set up our current exchange server 2007 to act as the outgoing smtp server but also have some issues.
    this will be posted on a separate post.

    again, sorry for not researching the issue properly.

    Andrew P.
    • Marked as answer by p.andrew Wednesday, April 13, 2011 10:14 AM
    Wednesday, April 13, 2011 10:14 AM

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