Hi, i have got one Exchange 2010 user that cant receive mail from internal users. User1@internal.com can send mail to anyone. User2@internal.com can reply to user1 and it is successful User2@internal.com cant create a new email and send it to user1 (Error: The e-mail address you entered couldn't be found. Check the address and try resending the message. If the problem continues, please contact your helpdesk.) User@outside.com can send mail to user1@internal.com with no problem... Hope this make sence... The user can send mail to internal and external user Local users can reply to mail and the user receive the email

Can you check the results of what is the address for get-receipient -user1 |fl and same for user2

When trying to run "get-receipient -user1 |fl" under exchange management shell i get the following: The term 'get-receipient' is not recognized as the name of a cmdlet, function, script file, or operable program....... Does not seem to be a typo...am i missing something. Ok, im doing some reading here quick and my Get-ExecutionPolicy gives me remotely signed...So just having a look how to change it then i can hopefully run the scrip.

Ok, no luck, changed the Set-ExecutionPolicy to Unrestricted but still cant run it...

Hi, That should be the X500 address issue. Could you send the email by choosing the User2 from the Offline Address Book directly? If you can, we need to clear the AutoComplete Cache issue. (http://support.microsoft.com/kb/287623) Thanks Allen Allen Song

Bingo!! Yes, sending from the address book works... Thanks... Seems to be sorted, will have to do some more testing but will post here if there is any more issues