Users getting error in dynamics 365 portal when trying to send email

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Posted on by serverpro

When trying to send emails from dynamics 365 it throws the error below:

Error : System.Net.WebException: The request was aborted: Could not create SSL/TLS secure channel.

at System.Web.Services.Protocols.WebClientAsyncResult.WaitForResponse()

at System.Web.Services.Protocols.WebClientProtocol.EndSend(IAsyncResult asyncResult, Object& internalAsyncState, Stream& responseStream)

Exchange 2013 server on premises and the connection has been established with dynamics 365.

There is no issue in setting up the connection and the test also passes but later on when the users are trying to send email from Dynamics 365 it shows above error in dynamics portal

Checked the TLS settings in exchange server

Also checked the Firewall to allow the Dynamics 365 IP addresses . any inputs will be appreciated

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Dynamics 365 Business Central

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Marco Mels Microsoft Employee on at

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Hello,

This is a forum about Dynamics 365 Business Central. Maybe you can redirect your question to a forum that does handle Exchange Server support. Also note that Exchange Server 2013 did reach end of life cycle. The suggestion is therefore to test if you do also receive this error with other Exchange Servers like smtp.office365.com?

Thanks.

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