Does Exchange 2010 accept ' when creating a user email address?

Yes, I have a user that has a ' in their name like test.o'neal so when i created their email address it shows as test.o'
It seems to work but when i log into their account thru the admin owa it gives me this error. Is this because exchange doesn't except an ' in the email account?

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Technical Information: Uncaught SyntaxError: missing ) after argument list
James EdwardsSystems ManagerAsked:
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CESNetwork AdministratorCommented:
It does not support the apostrophe.  Here is a table of unsupported characters:

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