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To configure your Autodiscover Record:
You will also need to create one of the following DNS records:
A record for autodiscover.domain.com
pointing to 66.129.85.151
OR
CNAME record for autodiscover.domain.com
pointing to autodiscover.myhostedservice.com
Once the record has been created, some DNS servers to not auto-refresh, so this change make take several hours before going into effect.
Last, you may need to force Outlook to download the Offline Address Book. You may do this by selecting:
Send/Receive
Send/Receive Group
Download Address Book
Uncheck "Download changes since last Send/Receive" and select OK
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