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email error 403


How to fix email error ‘403 4.7.0 TLS handshake failed’ in cPanel, Plesk, Exim, Qmail, Exchange and SendMail servers

How to fix email error ‘403 4.7.0 TLS handshake failed’ in cPanel, Plesk, Exim, Qmail, Exchange and SendMail servers

Debugging and fixing email errors is a common task we perform in our Outsourced Web Hosting Support services provided to shared server owners.

Among the common mail server errors, ‘403 4.7.0 TLS handshake failed’ error happens when a sender tries to send mail to a recipient using secure TLS protocol. (more…)