Can't connect with SMTP

[simonszu]

Hi,

i have a postfix with SSL (self-signed cert) on the same machine where roundcoube should be installed. It listens on Port 25. Other mailclients can connect (after a warning about the self-signed cert).
Roundcube can not connect. I don't know what's wrong.

[21-Mar-2013 13:49:49 +0100]: SMTP Error: SMTP error: Connection failed: Failed to connect socket: fsockopen(): unable to connect to ssl://simonszu.de:25 (Unknown error) in /opt/roundcube/program/include/rcmail.php on line 1006 (POST /?_unlock=loading1363870184535&_lang=de?_task=mail&_action=send)

I tried with username, username@host. I have no idea, what could be the error...

[alec]

On port 25 it isn't SSL but TLS I suppose.

[simonszu]

Well...yes, you're right.

I was assuming the whole time that i had my postfix running on SSL, but it was TLS instead.

Now it's working.