Hi, What does your /etc/hosts look like? does it have the fully qualified hostname in it? What does hostname -f return?
To answer your question, you may modify the sendmail.mc (or even sendmail.cf, though that is not recommended unless you eschew the m4 config -- only for the masochist amongst us) like so: ====================================================================== ... MASQUERADE_AS(Informatik.Uni-Oldenburg.DE)dnl ## Custom configurations below (will be preserved) LOCAL_CONFIG # my official domain name # ... define this only if sendmail cannot automatically determine your domain Dj$w.Informatik.Uni-Oldenburg.DE ====================================================================== I still think that you should get it to work otherwise. manoj ---------------------------------------------------------------------- 127.0.0.1 localhost 205.216.83.252 tiamat.datasync.com tiamat ---------------------------------------------------------------------- -- "Stop annoying Mister President with impertinent questions, Junior." Death Race 2000 Manoj Srivastava <url:mailto:[EMAIL PROTECTED]> Mobile, Alabama USA <url:http://www.datasync.com/%7Esrivasta/> -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .