Exchange 2007 - Users mailbox can't send mail

I had 59 Email accounts in Exchange 2007 that I set a 1KB size limit on so those 59 people could not send email until the restriction was lifted. Now that the restriction has been lifted, I have 5 users that still cannot send mail. Their limits are set globally just like everyone else, but they can't send. When I log into OWA, it shows that they still have a 1KB limit. I have checked and rechecked,  and there is no restrictions. This is very time sensitive, any help given would be appreciated.  
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Have you restarted Exchange services?

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LAWWORLDAuthor Commented:
Many thanks for that tip. That did it. Thanks again
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