Email issue when sending - The following recipient(s) could not be reached

unrealone1
unrealone1 used Ask the Experts™
on
I have an SBS 2003 Server and I have an XP Professional workstation

I try and send a message from my domain   john@companydomain.co.uk

to rachel@customerdomain.co.uk

Your message did not reach some or all of the intended recipients.

      Subject:             RE: test Email
      Sent:                 28/01/2010 09:48

The following recipient(s) could not be reached:

      'rachel@customerdomain.co.uk' on 28/01/2010 09:49
            This message could not be sent. Try sending the message again later, or contact your network administrator. The client operation failed. Error is [0x80004005-0x0004b9-0x000501].

My customer
rachel@customerdomain.co.uk downloads emails via pop3 connector on an exchange server.

customerdomain.co.uk and companydomain.co.uk are NOT listed as spam.
     
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See if this answer applies to you also: Error while sending mail
The client operation failed. Error is [0x80004005-0x0004b9-0x000501] (Tip: You moved some mailboxes lately)

A user was complaining he can’t send meeting request or some emails to specific users. The user gets bounced mail (NDR) and NDR has the following error message.

    This message could not be sent. Try sending the message again later, or contact your network administrator. The client operation failed. Error is [0x80004005-0x0004b9-0x000501].

I do realize I moved bunch of mailboxes and the user complaining he can’t send mails to those moved mailboxes. When I try to track the message using Exchange console, I don’t see this mail hitting Exchange at all. So this is Outlook specific issue.  It became clear user’s Outlook didn’t get the latest mailbox move information (Offline Address Book). I informed user to download the Outlook Offline Address Book manually (Outlook: Tools –> Send/Receive –> Download Address Book and click OK on the dialog box).

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Commented:
@NarendraG
I haven't tried your solution yet.

Just to make you aware that your example is when sending emails internally, mine isn't. Is this still ok?
And is it definitely a problem my end?

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yes just give a try no harm in that
Co-Owner
Top Expert 2011
Commented:
Please have a read through my FAQ regarding problems sending mail to one or more domain:
http://www.it-eye.co.uk/faqs/readQuestion.php?qid=2 
Alan HardistyCo-Owner
Top Expert 2011

Commented:
Thanks unrealone1 - what was the problem in the end?

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