Brian Candler schrieb:

ok sorry for being unprecise. I have a configuration with exim4, courier-imap, courier-pop, sqwebmail, courier-boxauthdaemon and authpgsql. All userdate are in a postgres database. In my users virtual home-mail-dir I have eg. a file named sqwebmail-config with the contents SORT=D PAGESIZE=10 AUTOPURGE=7 NOFLOWEDTEXT=0 NOARCHIVE=0 STAR TOFWEEK=0 FULLHEADERS FROM="Rainer+20Sigl"+20<si...@mpe.mpg.de> This tells sqwebmail to take this return-address instead of the default (???) sigl@mpemail. mpemail is the hostname of my machine. This configuration works very well, the return address is set correctly... Only if I address a wrong recipient address the error message from the delivery daemon does not come back to me, to the user but it comes back to user ex...@mpe.mpg.de.

Then I learnt that user exim is set by exim4 if the sending user is untrusted. With this information I set in exim4.conf the line trusted_users = Debian-exim : exim : www-data : list this works fine by now. Only and this is my orignal question, with this configuration not us...@mpe.mpg.de is sending the email but suddenly and without substantiation in my mind the user@mpemail is sending the email. On this score some emails to mailers which are verifying the domain of the sender are bounced. I figured out a little workaround: in the file sendit.sh (/usr/lib/courier/sqwebmail) I changed in the shell-script the user@mpemail with us...@mpe.mpg.de with useratmpe=${1%@*}@mpe.mpg.de #exec /usr/sbin/sendmail -oi -t $DSN -f "$1" exec /usr/sbin/sendmail -oi -t $DSN -f "$useratmpe"

this configuration works fine but its only a workaround!!! do you have any idea solving my problem??