tlsVerifyServer

The tlsVerifyServer option allows you to specify whether a server certificate has to be verified.

tlsVerifyServer

YES | NO

YES

The certificate must be verified (default).

NO

The certificate does not have to be verified. In this case, there is a danger that an attacker (“man in the middle”) will be able to tap the data transfer on the connection between the mail sender backend and mail server unnoticed.