Send SMTP Mail Message: An error occurred while attempting to establish an SSL or TLS connection

[Srini84 (Srinivas Kadamati)]

@Dwightschrutee

An error occurred while attempting to establish an SSL or TLS connection. The server’s SSL certificate could not be validated for the following reasons: • The server certificate has the following errors: • The revocation function was unable to check revocation for the certificate. • The revocation function was unable to check revocation because the revocation server was offline. • An intermediate certificate has the following errors: • The revocation function was unable to check revocation for the certificate. • The revocation function was unable to check revocation because the revocation server was offline.

Hi @Dwightschrutee

Check below post and check the alternatives

An error occurred while attempting to establish an SSL or TLS connection during using SMTP or IMAP

Firstly Open gmail account of your credentials and go to security settings and “Turn On” in Less secure app access Secondly Turn Off/Disabled your antivirus Then try again

Hope this may help you

Thanks,
Srini