Not a bug SMTP without encryption

[liquidox]

Affected version

2.3.0

Since 2.3.0 upgrade my emails are not working anymore:

Symfony\Component\Mailer\Exception\TransportException: Email to from failed: Unable to connect with STARTTLS: stream_socket_enable_crypto(): SSL operation failed with code 1. OpenSSL Error messages: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed src/vendor/symfony/mailer/Transport/Smtp/Stream/SocketStream.php:171

I read through some resolved bug reports, but they all discuss how to fix this by setting up proper encryption. Until now, my settings had always worked. Should I still be able to send emails in this manner on our internal network?

 

[Kirby]

The SMTP server at 172.18.30.122 supports STARTTLS but has no valid certificate, this needs to be fixed - either by setting up a valid certificate (Recommended) or by disabling STARTTLS.

 

[liquidox]

Aye, this is what I figured. Will let our IT department know...