Re: 554 bounce message lacks detail
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. 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= to= proto=ESMTP > helo= > > 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
Re: 554 bounce message lacks detail
On Fri, 9 Jul 2021 08:38:30 +0200 Matus UHLAR - fantomas wrote: > On 08.07.21 18:48, li...@lazygranch.com wrote: > >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. > > >>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= > > to= proto=ESMTP > > helo= > > This is not a bounce, this is a rejection by your MTA, and sending > MTA is responsible for creating a bounce in this case. > > Some MTAs are very shitty regarding to bounce creation, not providing > full messages. > > >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? Preferably let the person know the RBL > >that caused it. > > you can add info to reject messages by configuring e.g.: > > smtpd_reject_footer_maps=regexp:/etc/postfix/reject_footes_maps > > but nobody will guarantee that the sending MTA will put that info to a > bounce. > > However, if it helps, please report this info so we know. > > I remember M$IE used to provide own error message if the message from > server was smaller than 512B (and option "show friendly HTTP error > messages" was on), making error messages useless. > For completeness (in that I should have included this): postconf mail_version mail_version = 3.5.8 OK details here: http://www.postfix.org/smtpd.8.html: http://www.postfix.org/postconf.5.html: However no examples on how to create the regex nor can I find any on the internet. How about this: /etc/postfix/main.cf: smtpd_reject_footer = \c. For assistance, call 800-555-0101. Please provide the following information in your problem report: time ($localtime), client ($client_address) and server ($server_name). I would do something more like smtpd_reject_footer = \c. In your browser go to https://mxtoolbox.com/blacklists.aspx and enter ($server_name)
Re: 554 bounce message lacks detail
On 09.07.21 08:38, Matus UHLAR - fantomas wrote: you can add info to reject messages by configuring e.g.: smtpd_reject_footer_maps=regexp:/etc/postfix/reject_footes_maps but nobody will guarantee that the sending MTA will put that info to a bounce. However, if it helps, please report this info so we know. I'll add an example, line: /User unknown in local recipient table/ Zadana mailova adresa neexistuje. in /etc/postfix/reject_footes_maps results in SMTP message: rcpt to: 550-5.1.1 : Recipient address rejected: User unknown in local recipient table 550 5.1.1 Zadana mailova adresa neexistuje. -- Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. I'm not interested in your website anymore. If you need cookies, bake them yourself.
Re: 554 bounce message lacks detail
On 08.07.21 18:48, li...@lazygranch.com wrote: 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. 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= to= proto=ESMTP helo= This is not a bounce, this is a rejection by your MTA, and sending MTA is responsible for creating a bounce in this case. Some MTAs are very shitty regarding to bounce creation, not providing full messages. 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? Preferably let the person know the RBL that caused it. you can add info to reject messages by configuring e.g.: smtpd_reject_footer_maps=regexp:/etc/postfix/reject_footes_maps but nobody will guarantee that the sending MTA will put that info to a bounce. However, if it helps, please report this info so we know. I remember M$IE used to provide own error message if the message from server was smaller than 512B (and option "show friendly HTTP error messages" was on), making error messages useless. -- Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. Windows 2000: 640 MB ought to be enough for anybody
554 bounce message lacks detail
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. 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= to= proto=ESMTP helo= 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? Preferably let the person know the RBL that caused it.
