1

Resolved

Add settings to allow SMTP authentication using TLS

description

The issue is Microsoft has forgotten an enableSsl attribute in the mailSettings/network element of web.config and the only way to enable TLS authentication to SMTP servers out of the box is using SmtpClient.EnableSsl = true programmatically.
 
We have added an application settings to enable TLS in web.config:
<appSettings>
<add key="EnableTLS" value="true" />
</appSettings>

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