there are basically 2 errors you are getting:
1) mrelay.perfora.net on port 587 and mrvnet.kundenserver.de on Port 587
SMTP: Failed to connect socket: Connection refused (code: -1, response: )
The connection is probably being refused because of the Username and password being entered. Make sure that you have set up an email address for your 1 and 1 domain, use that email address as the From Address for your email. when you set up a new email, you will set a user name and password for it. make sure that is the username and password you are using in the pear mail settings
2) mrvnet.kundenserver.de on Port 25
SMTP: SMTP server does not support authentication
this server doesn't support authentication, so don't enable authentication when using this smtp server.
to enable open ssl, you need to edit the php.ini file, find:
and change it to:
then restart the web server.