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troubleshooting Question

Exchange 2007 550 550 5.1.1 User unknown (state 14)

Avatar of justinmoore14
justinmoore14Flag for United States of America asked on
ExchangeWindows Server 2003
15 Comments1 Solution2895 ViewsLast Modified:
Hello Experts,

When I create a new Mailbox on the Exchange 2007 server you are unable to send to that Mailbox from the “Outside World”. For example, if you try to e-mail user@domain.com  from the outside world you will get the following error message (550 550 5.1.1 User unknown (state 14)). Here are a couple of things that get me. Number one you can e-mail out (Send) from that account to the outside world, however if the recipient replies or creates a new message to that account they get the message above. Next, this just started happening all of the sudden today. Also, note that I just created another account yesterday and had no issue, but today I do. Weird??  Any ideas what would be causing this??

Avatar of Akhater
AkhaterFlag of Lebanon imageSolutions Architect

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