To connect your email client with the TU mail server via IMAP or POP3 protocol, you have to choose the following settings:
Mailing address: username@mail.tuwien.ac.at (TU login)
In-box server: mail.tuwien.ac.at
Out-box server: mail.tuwien.ac.at
POP3 protocol:
POP3-Port (standard): 110 (without SSL), 995 (with SSL)
IMAP protocol:
IMAP-Port (standard): 143 (without SSL), 993 (with SSL)
IMAP and POP3 are internet standard protocols for email, allowing your email program to access email accounts on your web space.
IMAP allows multiple clients to access the same mailbox, while keeping the email messages available on the server for later access via webmail.
POP3 downloads the messages, while removing the messages from the server. The emails are then no longer accessible via webmail or a mail program.