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My SharePoint 2013 has stopped sending emails suddenly. I have checked my SMTP settings and outgoing email from central admin and have tried to use PowerShell to test it via this command:

[Microsoft.SharePoint.Utilities.SPUtility]::SendEmail($spWeb ,0,0,$email,$subject,$body)

Which returns false.

Also, this exception appears in the workflow:

" RequestorId: 2e735eb2-82ec-6a86-0000-000000000000. Details: An unhandled exception occurred during the execution of the workflow instance. Exception details: System.ApplicationException: HTTP 500 {"Transfer-Encoding":["chunked"],"X-SharePointHealthScore":["0"],"SPClientServiceRequestDuration":["10093"],"SPRequestGuid":["2e735eb2-82ec-6a86-8c3c-8fe9879848d3"],"request-id":["2e735eb2-82ec-6a86-8c3c-8fe9879848d3"],"X-FRAME-OPTIONS":["SAMEORIGIN"],"MicrosoftSharePointTeamServices":["15.0.0.4605"],"X-Content-Type-Options":["nosniff"],"X-MS-InvokeApp":["1; RequireReadOnly"],"Cache-Control":["max-age=0, private"],"Date":["Wed, 08 Feb 2017 11:20:28 GMT"],"Server":["Microsoft-IIS/8.5"],"X-AspNet-Version":["4.0.30319"],"X-Powered-By":["ASP.NET"]} at Microsoft.Activities.Hosting.Runtime.Subroutine.SubroutineChild.Execute(CodeActivityContext context) at System.Activities.CodeActivity.InternalExecute(ActivityInstance instance, ActivityExecutor executor, BookmarkManager bookmarkManager) at System.Activities.Runtime.ActivityExecutor.ExecuteActivityWorkItem.ExecuteBody(ActivityExecutor executor, BookmarkManager bookmarkManager, Location resultLocation)"

Can you please advise what else I could check?

Tolsadus
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Norhan ElKholy
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  • [Sending emails from the sharepoint server towards the exchange server via telnet is working?](http://www.admin-enclave.com/en/articles/exchange/352-howto-send-an-email-using-telnet.html) – BastianW Feb 28 '17 at 14:06
  • " 421 4.7.0 too many errors on this connection closing transmission channel" This appears after the step : mail from: username@example.com – Norhan ElKholy Mar 01 '17 at 06:28
  • If you also got errors via telnet then the issue do not seamed to be related to sharepoint (if you did the telnet connection right). – BastianW Mar 01 '17 at 07:28

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