Postfix troubles (rewriting addresses)

[Joachim Trinkwitz <jtr@uni-bonn.de>]

Dear all,

to rewrite my mail address correctly (ppp connection to university
ISP), I inserted the following lines in the config files:

- /etc/postfix/main.cf:relayhost = mailout.uni-bonn.de
                       myhostname = wabe.germanistik.uni-bonn.de
                       masquerade_domains = uni-bonn.de
- /etc/postfix/canonical:joachim jtr@uni-bonn.de
- /etc/postfix/sender_canonical:joachim jtr@uni-bonn.de

This works for my part, but there is a problem when I send a mail to
someone with an address like `name@xyz.uni-bonn.de': the address is
delivered correctly, but the `To:' address in the header too is
rewritten to `name@uni-bonn.de' (without the `xyz'). This wouldn't be
a real problem, but I'm driving people crazy who've got a mail with
such an address in the `CC' field and wants to do a `Reply to all' ...

Hoping someone can give me a clue,
joachim