li...@lazygranch.com: > I rarely bounced email due to RBLs from someone I actually correspond > with. However I did bounce a message with the sender receiving this > message: > > ?Sorry, we were unable to deliver your message to the following > address.<m...@example.com>
If that is all the detail that the sender gets, then no amount of Postfix tweaking is going to make a difference. > From the maillog: > Jul 7 16:35:21 example postfix/smtpd[27776]: NOQUEUE: reject: RCPT from > sonic301-25.consmr.mail.gq1.yahoo.com[98.137.64.151]: 554 5.7.1 Service > unavailable; Client host [98.137.64.151] blocked using cbl.abuseat.org; > from=<otherper...@sbcglobal.net> to=<m...@example.com> proto=ESMTP > helo=<sonic301-25.consmr.mail.gq1.yahoo.com> > > Now you can use mxtoolbox to see that indeed 98.137.64.151 is blocked. > Same goes for sonic301-25.consmr.mail.gq1.yahoo.com. However the sender > doesn't know the FQDN nor the IP address their email server used. > > Is there some flag I need to set to provide more information regarding > the 554 bounce? See: http://www.postfix.org/postconf.5.html#default_rbl_reply http://www.postfix.org/postconf.5.html#rbl_reply_maps > Preferably let the person know the RBL that caused it. That information is already present in the SMTP server response: 554 5.7.1 Service unavailable; Client host [98.137.64.151] blocked using cbl.abuseat.org It is up to Yahoo to pass that on to the sender. Wietse
