Exchange 2010 SP3 to Office 365 Hybrid Migration - One user with proxy address error

There is no problems migrating anyone to the cloud.  The only issue I have is one user that continues to throw this error.

the target mailbox doesn't have an smtp proxy matching

The problem is that this user does have that proxy address on their box and DirSync has been synced multiple times and it continues to error out with this error.

Does anyone know what may be causing this or any ideas to try?
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AmitIT ArchitectCommented:
Did you tried this solution:

For one user, I might recreate fresh ID and mailbox.
considerscsAuthor Commented:
Yes, I have seen that solution a few times now and the address is actually applied to the user and mailbox.  Problem with recreating it is that could cause the old x500 address issue.

Any other ideas?
AmitIT ArchitectCommented:
Just create new ID for user, keep this one also. Then switch over the email address and let it work for few days. later you delete old one.
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considerscsAuthor Commented:
created new user and it from the beginning of creation has the smtp proxy address and I still get the same error in moving the new account up.
AmitIT ArchitectCommented:
That seems to be different issue not related to this user only. I suggest you call Office 365 support team.
considerscsAuthor Commented:
Contacting Microsoft as this is making no sense to me.  will post results for others once I have an answer.
considerscsAuthor Commented:
I figured it out myself.  I had to reinstall AD Sync since the user was created after the initial setup.  For some reason just syncing it would not work even though I could see that smtp attribute in the cloud.  Somethign that MS needs to look into resolving as this is not a good resolution each time.

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considerscsAuthor Commented:
figured it out myself before MS even responded to a question on their forum.
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