SSL unknow in Thunderbird

[Brandon]

Where can I change the settings ssl in Thunderbird.
When I try to connect to the ssl in Thunderbird, I get the message (SSL unknow, not trusted etc. Name(CN): Univention Corporate Server Root CA)
On the web everything is OK (certyficate is trusted), because I have my own ssl, and I would like to use my ssl to smtp.page.com
where can I change it?

[Brandon]

write so:
I have my ssl key and I would replace him, but unfortunately I can not because when a system had to generate ssl key Univention.
How can I replace the /etc/ssl/univention?

[obr]

http://sdb.univention.de/1191

[Brandon]

I'm sorry but unfortunately I do not know German, but I did so I changed /var/lib/cyrus/cert.pem or /var/lib/cyrus/private.key to my ssl and not works. (Error with ssl)
My ssl is good because it works excellent website, but I can not change the outlook (of course it wokrs but of ssl Univention)
How can I change this to be the same ssl?

[Brandon]

http://sdb.univention.de/1191

so can I try cp /etc/myssl/cert.pem /var/lib/cyrus/cert.pem I get:
cp: can not be performed stat on `/etc/myssl/cert.pem': No such file or directory
Can you help me?