Hidden data in Outlook autofill addresses

Hi,

I have moved a client from a pop3 service to a new hosted smtp service.

This problem I have come across before and there is a work around but is there a better solution.

When (sometimes) a user emails a colleague using the autofill in Outlook it at first fails, once the autofill is deleted and the address entered manually all works fine.

My question(s) are:

why does this only happen now and then?
what is being stored in the autofill?
is there a better way to tackle this than wait for the failure and then delete the autofill?

thanks
gareth
Gareth McKeeCEO/OwnerAsked:
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Skyler KincaidNetwork/Systems EngineerCommented:
When we migrate users from internal Exchange to Office 365 we deal with this all the time. The only way to fix it is to delete the entry from autofill and have them enter it again.
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