https://technet.microsoft.com/en-us/library/dn600437(v=exchg.160).aspx

https://www.netwrix.com/netwrix_password_expiration_notifier.html

This is a free tool that reminds users via e-mail to change their passwords before they expire.

This rule will modify password expiration e-mail messages to include more information and links to OWA where users can change their AD passwords.

EAC → Mail Flow → Rules → New Rule

Name → Password Expiration Notifications

Apply this rule if → The subject or body includes… → Important: Password Expiration Notification

Do the following… → Append the disclaimer…

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<b>Hosted Exchange account passwords can be maintained using <a href="https://exchange.virtualarchitects.com/owa"><font color="0000FF">OWA (Outlook Web App):</font></a></b></br>
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<a href="https://exchange.virtualarchitects.com/owa"><font color="0000FF">https://exchange.virtualarchitects.com/owa</font></a></br>
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<b><a href="https://www.sonoracomm.com/wiki/doku.php?id=quick_guide:exchange_password"><font color="0000FF">QuickGuide</font></a> page is here:</b></br>
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<a href="https://www.sonoracomm.com/wiki/doku.php?id=quick_guide:exchange_password"><font color="0000FF">https://www.sonoracomm.com/wiki/doku.php?id=quick_guide:exchange_password</font></a></br>

Exchange manages a test account (like 'extest_ebdfcf4a7aa54@internal.yourdomain.com') for use with several commands like:

• Test-OwaConnectivity
• Test-ActiveSyncConnectivity
• Test-WebServicesConnectivity

The test account credentials can expire.

You can reset the credentials in the Exchange Management Shell like this:

Test-ActiveSyncConnectivity -ResetTestAccountCredentials -Verbose