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cmc2006

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Cant Send mail to users with user.name@email.com format addresses through exchange 2003

Whenever one of our users sends an email to or replies to an person which has the email format user.name@email.com then the mail doenst get sent - I get a message about a virtual mailbox error.

There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <topaz.livingstone.com #5.5.0 smtp;550 <hristina.chiripova@mobexpert.bg>: Recipient address rejected: User unknown in virtual mailbox table>

Any clues why this is happening?
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ksharma4
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is this internal or external? happening to just one address or multiple and for just one domain or multiple?
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cmc2006

ASKER

Hi,
This is an Exchange System, Internal Email is fine - External email is fine except email addresses in that format and it affects all users to all domains.
Mail is getting sent via Exchange and recieved through a pop connector.
do you have a smart host configured in the smtp virtual server properties
Try sending mail from another external mail to the address in question??

Thnx
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ASKER

a smart host?
Whats that
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ASKER

Soory Checked it and there was an configuration prob on he server.