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Hello,<br />
<br />
We have recently replaced a Windows 2008 SBS (Exchange 2007) with a new server Windows 2012 (Exchange 2013).<br />
<br />
All users are experiencing problems when they attempt to reply to [internal] emails submitted prior to the migration.<br />
<br />
Message is:<br />
This e-mail message cannot be delivered to %Email% because the e-mail address is no longer valid.<br />
<br />
This is creating major havoc. &nbsp;Any assistance would be greatly appreciated.<br />
<br />
Regards,<br />
Real-Timer
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</div>


Hello,

We have recently replaced a Windows 2008 SBS (Exchange 2007) with a new server Windows 2012 (Exchange 2013).

All users are experiencing problems when they attempt to reply to [internal] emails submitted prior to the migration.

Message is:
This e-mail message cannot be delivered to %Email% because the e-mail address is no longer valid.

This is creating major havoc.  Any assistance would be greatly appreciated.

Regards,
Real-Timer

This e-mail message cannot be delivered to Email because the email-address is no longer valid

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.

Exchange

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.