Hi,

user: flo
machine: of.login-solutions.local
-> email: flo@of.login-solutions.local

/etc/mail/sendmail.cf configured to use a relay to send to internet.

Now what to configure that this machine will automatically send it's 
messages (e.g. cron mails) with a "real" email address, thus always 
overwriting the flo@of.login-solutions.local with flo@wolfnode.de ?

Thanks
Florian