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You might want to just look into setting up a catchall mailbox.<br />
<br />
<a href="http://technet.microsoft.com/en-us/library/bb691132%28v=exchg.141%29.aspx" rel="ugc">http://technet.microsoft.com/en-us/library/bb691132%28v=exchg.141%29.aspx</a><br />
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This would resolve as well for other users that may not exist or misspelled names etc.
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You might want to just look into setting up a catchall mailbox.

http://technet.microsoft.com/en-us/library/bb691132%28v=exchg.141%29.aspx [http://technet.microsoft.com/en-us/library/bb691132%28v=exchg.141%29.aspx]

This would resolve as well for other users that may not exist or misspelled names etc.

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We on occasions getting emails that are sent to administrators@mydomain.co<wbr />m and we do not have a mailbox for administrators and emails are getting delayed some due to this. I tried to create administrators mailbox so mail sent to this can go through and then i would then log into this mailbox and delete the bogus emails that are there. But I can't create it due to active directory having a group that is called administrators. Exchange give me an error when trying to create a mailbox for it saying smtp proxy address already being used. Any way to fix this problem. <br />
<br />
Thanks,<br />
James
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We on occasions getting emails that are sent to administrators@mydomain.com and we do not have a mailbox for administrators and emails are getting delayed some due to this. I tried to create administrators mailbox so mail sent to this can go through and then i would then log into this mailbox and delete the bogus emails that are there. But I can't create it due to active directory having a group that is called administrators. Exchange give me an error when trying to create a mailbox for it saying smtp proxy address already being used. Any way to fix this problem. 

Thanks,
James

exchange 2010

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.