> Hi > I have a little problem. > My users that work with ms outlook. > When they check the options "request a delivery receipt for this > message" > But this one doesn't work. The other option, "request a read receipt for > this message", works. > Why? > How can I resolved this "problem"?
rfc3461 was written after qmail was released. I think even rfc1891 was created later than qmail. According to EHLO qmail-ldap 20040801 does not support DSN. There are different receipt on delivery implementations. sendmail uses one header, qmail uses different header. In sendmail this feature is turned off by default in some installs. In qmail it requires special line in .qmail (http://www.qmail.org/man/man1/qreceipt.html). Users are trying to use email feature that has more problems and implementation incompatibilities than read receipts. -- Tomas
