First, if you are going to reply to this email, please reply to [EMAIL PROTECTED], not to the address in the message header. This is because my problem concerns setting the return address in the message header. :) I am running qmail-1.0.3 on Slackware Linux 7.0. I collect my mail from my university's POP server using fetchmail, and it is delivered via qmail-smtpd with no problems. I have a different user name on the university system. For incoming mail, fetchmail handles the translation with no problems. For outgoing mail, I want to use the MAILUSER and MAILHOST environment variables so that replies go to my univeristy email address. This works fine if I send messages via qmail-inject, but my MUA (pine) invokes sendmail. The sendmail-path in /usr/lib/pine/pine.conf is set to "/usr/lib/sendmail -oem -oi -t" as recommended in the qmail FAQ, and /usr/lib/sendmail is a symbolic link to /var/qmail/bin/sendmail. I don't have any other sendmail installed. It looks like qmail's sendmail does not obey the MAILUSER and MAILHOST variables in the same way as qmail-inject. Is there any way to change the user name which appears in my messages when using sendmail? Thanks in advance, Michael