If I send a message out via sendmail that has user@ip_address format sendmail returns the message with an error that appears to be looking for ip_address to be a DNS that it can't find. Is there a feature that I need to change in my sendmail.mc file? Chris -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to debian-user-request@lists.debian.org . Trouble? e-mail to templin@bucknell.edu .