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Thanks for the information. &nbsp;We're running 2008 (functional level), but the TechNet link was useful. We already have the correct alternative UPNs, so it's just a matter of removing those .local proxy addresses from each mail-enabled account.
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Thanks for the information.  We're running 2008 (functional level), but the TechNet link was useful. We already have the correct alternative UPNs, so it's just a matter of removing those .local proxy addresses from each mail-enabled account.

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Greetings. We're using FIM with DirSync for Exchange Online Protection now, but will be moving to the full Office 365 shortly.<br />
<br />
A recommended tool from Microsoft is IDFix. &nbsp;This scans your active directory prior to a sync to identify objects that will not sync correctly to Azure AD.<br />
<br />
IDFix notifies us that all objects with .LOCAL SMTPs will not sync correctly.<br />
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That's essentially every mail enabled object.<br />
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Question: &nbsp;do we even need .LOCAL user addresses any more ? &nbsp;All mail uses our fqdn, including internal.<br />
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Thanks much.<br />
Stephen<br />
<br />
Mail server currently is Exchange 2010 SP3. &nbsp;All certs are trusted (not internally generated CA).
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Greetings. We're using FIM with DirSync for Exchange Online Protection now, but will be moving to the full Office 365 shortly.

A recommended tool from Microsoft is IDFix.  This scans your active directory prior to a sync to identify objects that will not sync correctly to Azure AD.

IDFix notifies us that all objects with .LOCAL SMTPs will not sync correctly.

That's essentially every mail enabled object.

Question:  do we even need .LOCAL user addresses any more ?  All mail uses our fqdn, including internal.

Thanks much.
Stephen

Mail server currently is Exchange 2010 SP3.  All certs are trusted (not internally generated CA).

.LOCAL domain question ..... Office 365 Directory Sync.

Office 365 is a group of software plus services subscriptions that provides productivity software and related services to its subscribers. Office 365 allows the use of Microsoft Office apps on Windows and OS X, provides storage space on Microsoft's cloud storage service OneDrive, and grants 60 Skype minutes per month. Office 365 includes e-mail and social networking services through hosted versions of Exchange Server, Skype for Business Server, SharePoint and Office Online, integration with Yammer, as well as access to the Office software. All of Office 365's components can be managed and configured through an online portal; users can be added manually, imported from a CSV file, or Office 365 can be set up for single sign-on with a local Active Directory using Active Directory Federation Services.

Microsoft 365

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.

Active Directory

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.