Nextcloud version _ 15.0.5
Operating system and version : UB18.04 lxc on ProxMox 5.3-12
PHP version _:7.3
iRedMail server 0.9.9
Trying to the server email notification setup in Administration.Basic Settings.
php debug is as follows:
A problem occurred while sending the email. Please revise your settings. (Error: Unable to connect with TLS encryption
Log data: ++ Starting Swift_SmtpTransport << 220 mail.mydomain.com ESMTP Postfix
<< 220 2.0.0 Ready to start TLS
!! Unable to connect with TLS encryption (code: 0))
The EHLO looks suspicious, shouldn’t that be something else?
As a matter of supporting information. The user account setup for the NC administrator has an email account and the NC email client works (sends and receives mail) with these creds and server settings.
Additionally other email clients are working with the mail server.