From the users point of view, our setup is very easy. You don't have to learn many hostnames. You just have to learn the domain name, which is itp.uni-frankfurt.de. This is called our virtual service address, and all services are accessed through this domain name.
We officially support Mozilla Thunderbird with auto configuration. If you want to use another program, you have to configure it by yourself. The required information is below.
Outgoing mail has to be sent to itp.uni-frankfurt.de. If you want to send from outside of our network (from home etc.), you have to enable TLS (Transport Layer Security) and authenticate with your login name and password. The port for submission is 587.
For incoming mail we provide IMAP support. IMAP works with the mail on the server and does not download it on your computer. The server is 'itp.uni-frankfurt.de'. You have to use the SSL encryption, regardless whether you are inside or outside of our network. Recommended is STARTTLS on port 143. Please make sure that you use plain text authentication. Some programs try to login with the complete email address instead of the login name. Check this if the connection fails.
There is also the option to use our webmail front end (SOGo): https://webmail.itp.uni-frankfurt.de
We have official certificates and you must not get any warning.
For Thunderbird we support autoconfiguration. After entering you mail address and password. Thundbird should automatically detect the correct settings. The final dialog should lock like this: