AWS – How to fix sending email on whm cpanel

By | April 29, 2022
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Default WHM email sending will fail.

Connection failed. Error #2: stream_socket_enable_crypto(): SSL operation failed with code 1. OpenSSL Error messages:error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed #2061

You need to update setting

WHM under Home »Server Configuration »Tweak Settings »Mail.
Then the option Restrict outgoing SMTP to root, exim, and mailman (FKA SMTP Tweak) was set to Off.