SBS - Exchange Email error - rfc822

Discussion in 'Windows Small Business Server' started by Dlogan, Feb 24, 2011.

  1. Dlogan

    Dlogan Guest

    Hi, Cound anyone please help with the error below. This is being sent
    to client when emailing our address, however is seems to only happpen
    randomly. I think the RFC error is something to do with exchange
    5.5!!. I am using exchange 2003, this problem has only started in the
    past few days.

    Exchange MTA x400 is shown as not available in system manager.

    Thanks
    David.

    This is an automatically generated Delivery Status Notification.

    Delivery to the following recipients failed.






    Final-Recipient: rfc822;
    Action: failed
    Status: 5.1.1
     
    Dlogan, Feb 24, 2011
    #1
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  2. Dlogan

    Joe Guest

    On Thu, 24 Feb 2011 06:02:36 -0800 (PST)
    Dlogan <> wrote:

    > Hi, Cound anyone please help with the error below. This is being sent
    > to client when emailing our address, however is seems to only happpen
    > randomly. I think the RFC error is something to do with exchange
    > 5.5!!. I am using exchange 2003, this problem has only started in the
    > past few days.
    >
    > Exchange MTA x400 is shown as not available in system manager.
    >
    > Thanks
    > David.
    >
    > This is an automatically generated Delivery Status Notification.
    >
    > Delivery to the following recipients failed.
    >
    >
    >
    >
    >
    >
    > Final-Recipient: rfc822;
    > Action: failed
    > Status: 5.1.1


    'RFC822' does not in itself signify an error, it is the standard for
    the format of SMTP email addresses, and I think it's being quoted here
    to demonstrate that the address is a valid one under that protocol.
    Certainly there's nothing wrong with the address shown.

    You say 'this is being sent to client'. If the client is getting this
    message, it's coming from their own mail server, not yours, and it is in
    their SMTP logs that the answer will be found. The 'Action: failed' is
    not exactly informative, and their detailed log should be more
    forthcoming.

    The important bit is 5.1.1, which means 'unknown user', and there are
    many possible reasons for that. My own server will reject many kinds of
    spam emails at the stage in proceedings where this error will be
    produced, as it's the surest way to prevent continual re-trying. But
    there are various other reasons for it.

    Here's a list of common SMTP error codes, from a Microsoft point of
    view, but the codes are common to all SMTP mail servers. Messages are
    configurable, so the error message may not match these exactly:

    http://support.microsoft.com/kb/284204

    At the moment, we don't even know if their server contacted yours.
    Given the extremely terse message, it might be telling the client it
    can't find the entire domain: it may not have found a valid MX record
    for your domain, for example. Are you receiving email directly, or
    downloading by POP3?

    And what is the reference to x400? It is an email system which is not
    widely used today, if at all, though Exchange can still use it. You
    don't need it running for normal Internet email. x400 email addresses
    look like LDAP Distinguished Names, and nothing at all like SMTP
    addresses.

    --
    Joe
     
    Joe, Feb 24, 2011
    #2
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