error while creating a exchange user

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" 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

Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

take out the Apostrophe's around the name and try..
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.
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..
Big Business Goals? Which KPIs Will Help You

The most successful MSPs rely on metrics – known as key performance indicators (KPIs) – for making informed decisions that help their businesses thrive, rather than just survive. This eBook provides an overview of the most important KPIs used by top MSPs.

mishalkAuthor Commented:
yes it build the automatic coversion of the account name
mishalkAuthor Commented:
but i have 1500 users which i created using scripts
try out this link ..hope this should provide some solution for your problem

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
good link, wish I found that..
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.