SMTP Error in XenForo 2.3.3

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lanbin

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Oct 2, 2024
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Code:

Symfony\Component\Mailer\Exception\TransportException: Email to [email protected] from [email protected] failed: Connection could not be established with host "ssl://smtp.protonmail.ch:587": stream_socket_client(): SSL operation failed with code 1. OpenSSL Error messages: error:0A00010B:SSL routines::wrong version number src/vendor/symfony/mailer/Transport/Smtp/Stream/SocketStream.php:154




#0 [internal function]...