error while creating a exchange user

HI
i am adding mail option for an existing user in exchange 2007 -clustered. While adding the user, i am not succeeding it. Getting an error


Summary: 1 item(s). 0 succeeded, 1 failed.
Elapsed time: 00:00:02


wmohdabumoslim
Failed

Error:
"wmohdabumoslim" is not valid for UserPrincipalName. Valid values are: Strings that includes '@', where '@' cannot be the last character..

Exchange Management Shell command attempted:
Enable-Mailbox -Identity 'ads.uob/staff/INFORMATION TECHNOLOGY CENTER/DIRECTOR OFFICE/wmohdabumoslim' -Alias 'wmohdabumoslim' -Database 'uobe2k7ccr\SG1 admin\Mailbox Database admin'

Elapsed Time: 00:00:00

mishalkAsked:
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debuggerauCommented:
take out the Apostrophe's around the name and try..
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mishalkAuthor Commented:
dear debuggerau:
there is no Apostrophe's in the username, only when the error comes ,it shows like that. I am just adding the existing user from the AD.
0
debuggerauCommented:
And the alias has no Apostrophe's surrounding it?


If you take out the alias, does it build the automatic conversion of the accountname?
You could always change it after..
0
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mishalkAuthor Commented:
yes it build the automatic coversion of the account name
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mishalkAuthor Commented:
but i have 1500 users which i created using scripts
0
ArisglobalCommented:
try out this link ..hope this should provide some solution for your problem

http://professionalinsight.net/exchange2007.aspx
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debuggerauCommented:
good link, wish I found that..
0
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