I've been using qmail for a number of years (probably more than 5), but never on a 'important company basis'.

I've never heard about the 'Delivery report' thing (and if I had, I've ignored it :). Now, I've "forced" a friend/collegue which is also my ISP to switch from sendmail to qmail.

And his customers is lacking the 'Delivery report' ("I would like to know if the mail have reached the destination mailbox") in qmail. Now, I don't know if QMAIL should do this, or MAILDROP but since qmail isn't really delivering the mail to the mailbox (it deliver it to maildrop which spam-/virus checks it and THEN deliver it to the mailbox/maildir) so I'm inclined to beleive that MAILDROP should be configured to send a delivery report (if requested!)...

Any opinions, or example maildroprc lines that can do this?