Olaf Hopp
2018-Apr-20 12:01 UTC
Sieve "redirect" changes envelope sender in 2.3. / pigeonhole 0.5
Hi (Stephan?), is it a new feature of dovecot 2.3 /pigeonhole 0.5 that a sieve "redirect" changes the envelope sender of a redirected mail or simply a bug ? A sends mail to B, B redirects to C C sees B (not A!) as envelope sender. It is not a problem if C gets the mail but if that mail bounces for various reasons it goes back to B and A will never know about this. I thick this is came with 2.3 / pigeonhole 0.5 ? # 2.3.1 (c5a5c0c82): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.devel (61b47828) # OS: Linux 2.6.32-696.23.1.el6.x86_64 x86_64 CentOS release 6.9 (Final) Regards, Olaf -- Karlsruher Institut f?r Technologie (KIT) ATIS - Abt. Technische Infrastruktur, Fakult?t f?r Informatik Dipl.-Geophys. Olaf Hopp - Leitung IT-Dienste - Am Fasanengarten 5, Geb?ude 50.34, Raum 009 76131 Karlsruhe Telefon: +49 721 608-43973 Fax: +49 721 608-46699 E-Mail: Olaf.Hopp at kit.edu atis.informatik.kit.edu www.kit.edu KIT ? Die Forschungsuniversit?t in der Helmholtz-Gemeinschaft Das KIT ist seit 2010 als familiengerechte Hochschule zertifiziert. -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 5304 bytes Desc: S/MIME Cryptographic Signature URL: <https://dovecot.org/pipermail/dovecot/attachments/20180420/0b3cbfad/attachment.p7s>
Olaf Hopp
2018-Apr-20 12:53 UTC
Sieve "redirect" changes envelope sender in 2.3. / pigeonhole 0.5
On 04/20/2018 02:01 PM, Olaf Hopp wrote:> Hi (Stephan?), > is it a new feature of dovecot 2.3 /pigeonhole 0.5 that a sieve "redirect" changes the envelope sender of > a redirected mail or simply a bug ? > > A sends mail to B, B redirects to C > C sees B (not A!) as envelope sender. > It is not a problem if C gets the mail but if that mail bounces > for various reasons it goes back to B and A will never know about this. > > I thick this is came with 2.3 / pigeonhole 0.5 ? > > # 2.3.1 (c5a5c0c82): /etc/dovecot/dovecot.conf > # Pigeonhole version 0.5.devel (61b47828) > # OS: Linux 2.6.32-696.23.1.el6.x86_64 x86_64 CentOS release 6.9 (Final) > > > Regards, > Olaf >I moved one version back, same config except those changes in 10-ssl.conf necessary for the 2.2->2.3 upgrade # 2.2.35 (b1cb664): /opt/dovecot/etc/dovecot/dovecot.conf # Pigeonhole version 0.4.23 (b2e41927) # OS: Linux 2.6.32-696.23.1.el6.x86_64 x86_64 CentOS release 6.9 (Final) and this version keeps the envelope sender untouched. So this a regression with 2.3 / 0.5 Envelope *senders* should never ever be modified. Regards, Olaf -- Karlsruher Institut f?r Technologie (KIT) ATIS - Abt. Technische Infrastruktur, Fakult?t f?r Informatik Dipl.-Geophys. Olaf Hopp - Leitung IT-Dienste - Am Fasanengarten 5, Geb?ude 50.34, Raum 009 76131 Karlsruhe Telefon: +49 721 608-43973 Fax: +49 721 608-46699 E-Mail: Olaf.Hopp at kit.edu atis.informatik.kit.edu www.kit.edu KIT ? Die Forschungsuniversit?t in der Helmholtz-Gemeinschaft Das KIT ist seit 2010 als familiengerechte Hochschule zertifiziert. -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 5304 bytes Desc: S/MIME Cryptographic Signature URL: <https://dovecot.org/pipermail/dovecot/attachments/20180420/616ad9b1/attachment.p7s>
Olaf Hopp
2018-Apr-20 13:08 UTC
Sieve "redirect" changes envelope sender in 2.3. / pigeonhole 0.5
OK, I found a solution: trusted_users = exim:dovecot in my exim.conf fixed it. Anyway this is an important change of behavour between 2.2 und 2.3 In 2.2 the "dovecot" under exims "trusted_users" was not necessary. Olaf On 04/20/2018 02:53 PM, Olaf Hopp wrote:> On 04/20/2018 02:01 PM, Olaf Hopp wrote: >> Hi (Stephan?), >> is it a new feature of dovecot 2.3 /pigeonhole 0.5 that a sieve "redirect" changes the envelope sender of >> a redirected mail or simply a bug ? >> >> A sends mail to B, B redirects to C >> C sees B (not A!) as envelope sender. >> It is not a problem if C gets the mail but if that mail bounces >> for various reasons it goes back to B and A will never know about this. >> >> I thick this is came with 2.3 / pigeonhole 0.5 ? >> >> # 2.3.1 (c5a5c0c82): /etc/dovecot/dovecot.conf >> # Pigeonhole version 0.5.devel (61b47828) >> # OS: Linux 2.6.32-696.23.1.el6.x86_64 x86_64 CentOS release 6.9 (Final) >> >> >> Regards, >> Olaf >> > > I moved one version back, same config except those changes in 10-ssl.conf necessary for the 2.2->2.3 upgrade > > # 2.2.35 (b1cb664): /opt/dovecot/etc/dovecot/dovecot.conf > # Pigeonhole version 0.4.23 (b2e41927) > # OS: Linux 2.6.32-696.23.1.el6.x86_64 x86_64 CentOS release 6.9 (Final) > > and this version keeps the envelope sender untouched. > So this a regression with 2.3 / 0.5 > Envelope *senders* should never ever be modified. > > Regards, > Olaf > >-- Karlsruher Institut f?r Technologie (KIT) ATIS - Abt. Technische Infrastruktur, Fakult?t f?r Informatik Dipl.-Geophys. Olaf Hopp - Leitung IT-Dienste - Am Fasanengarten 5, Geb?ude 50.34, Raum 009 76131 Karlsruhe Telefon: +49 721 608-43973 Fax: +49 721 608-46699 E-Mail: Olaf.Hopp at kit.edu atis.informatik.kit.edu www.kit.edu KIT ? Die Forschungsuniversit?t in der Helmholtz-Gemeinschaft Das KIT ist seit 2010 als familiengerechte Hochschule zertifiziert. -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 5304 bytes Desc: S/MIME Cryptographic Signature URL: <https://dovecot.org/pipermail/dovecot/attachments/20180420/0a0033f1/attachment-0001.p7s>
Bill Shirley
2018-Apr-21 13:25 UTC
Sieve "redirect" changes envelope sender in 2.3. / pigeonhole 0.5
On 4/20/2018 8:53 AM, Olaf Hopp wrote:> On 04/20/2018 02:01 PM, Olaf Hopp wrote: >> Hi (Stephan?), >> is it a new feature of dovecot 2.3 /pigeonhole 0.5 that a sieve "redirect" changes the envelope sender of >> a redirected mail or simply a bug ? >> >> A sends mail to B, B redirects to C >> C sees B (not A!) as envelope sender. >> It is not a problem if C gets the mail but if that mail bounces >> for various reasons it goes back to B and A will never know about this. >> >> I thick this is came with 2.3 / pigeonhole 0.5 ? >> >> # 2.3.1 (c5a5c0c82): /etc/dovecot/dovecot.conf >> # Pigeonhole version 0.5.devel (61b47828) >> # OS: Linux 2.6.32-696.23.1.el6.x86_64 x86_64 CentOS release 6.9 (Final) >> >> >> Regards, >> Olaf >> > > I moved one version back, same config except those changes in 10-ssl.conf necessary for the 2.2->2.3 upgrade > > # 2.2.35 (b1cb664): /opt/dovecot/etc/dovecot/dovecot.conf > # Pigeonhole version 0.4.23 (b2e41927) > # OS: Linux 2.6.32-696.23.1.el6.x86_64 x86_64 CentOS release 6.9 (Final) > > and this version keeps the envelope sender untouched. > So this a regression with 2.3 / 0.5 > Envelope *senders* should never ever be modified. > > Regards, > Olaf > >My father is subscribed to a mailing list that instead of using list at xyz.org in the envelope it actually modifies the envelope to the poster's email address. When they try to send the email to my server and the envelope says "Hi, I'm coming from bob at example.com", I know they are lying because *my mail server is the mail handler* for example.com. REJECT If you accept mail that's obviously forging the envelope sender, any spammer can just send email saying I am you and get passed by a whitelist statement in Spamassassin because... user at example.com "oh, he's a good guy.? Let him through." Bill
Stephan Bosch
2018-Apr-23 13:22 UTC
Sieve "redirect" changes envelope sender in 2.3. / pigeonhole 0.5
Op 20-4-2018 om 14:01 schreef Olaf Hopp:> Hi (Stephan?), > is it a new feature of dovecot 2.3 /pigeonhole 0.5 that a sieve > "redirect" changes the envelope sender of > a redirected mail or simply a bug ? > > A sends mail to B, B redirects to C > C sees B (not A!) as envelope sender. > It is not a problem if C gets the mail but if that mail bounces > for various reasons it goes back to B and A will never know about this. > > I thick this is came with 2.3 / pigeonhole 0.5 ? > > # 2.3.1 (c5a5c0c82): /etc/dovecot/dovecot.conf > # Pigeonhole version 0.5.devel (61b47828) > # OS: Linux 2.6.32-696.23.1.el6.x86_64 x86_64 CentOS release 6.9 (Final)Probably same as issue in this thread: https://www.dovecot.org/pipermail/dovecot/2018-April/111482.html Regards, Stephan.
Olaf Hopp
2018-Apr-23 13:46 UTC
Sieve "redirect" changes envelope sender in 2.3. / pigeonhole 0.5
On 04/23/2018 03:22 PM, Stephan Bosch wrote:> > > Op 20-4-2018 om 14:01 schreef Olaf Hopp: >> Hi (Stephan?), >> is it a new feature of dovecot 2.3 /pigeonhole 0.5 that a sieve "redirect" changes the envelope sender of >> a redirected mail or simply a bug ? >> >> A sends mail to B, B redirects to C >> C sees B (not A!) as envelope sender. >> It is not a problem if C gets the mail but if that mail bounces >> for various reasons it goes back to B and A will never know about this. >> >> I thick this is came with 2.3 / pigeonhole 0.5 ? >> >> # 2.3.1 (c5a5c0c82): /etc/dovecot/dovecot.conf >> # Pigeonhole version 0.5.devel (61b47828) >> # OS: Linux 2.6.32-696.23.1.el6.x86_64 x86_64 CentOS release 6.9 (Final) > > Probably same as issue in this thread: > > https://www.dovecot.org/pipermail/dovecot/2018-April/111482.html >Yes maybe. But I didn't see any sieve errors in the logs. In my case there is exim sitting in front of dovecot lmtp and as said trusted_users = exim:dovecot in thge exim.conf resolved this issue for me. Regards, Olaf -- Karlsruher Institut f?r Technologie (KIT) ATIS - Abt. Technische Infrastruktur, Fakult?t f?r Informatik Dipl.-Geophys. Olaf Hopp - Leitung IT-Dienste - Am Fasanengarten 5, Geb?ude 50.34, Raum 009 76131 Karlsruhe Telefon: +49 721 608-43973 Fax: +49 721 608-46699 E-Mail: Olaf.Hopp at kit.edu atis.informatik.kit.edu www.kit.edu KIT ? Die Forschungsuniversit?t in der Helmholtz-Gemeinschaft Das KIT ist seit 2010 als familiengerechte Hochschule zertifiziert. -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 5304 bytes Desc: S/MIME Cryptographic Signature URL: <https://dovecot.org/pipermail/dovecot/attachments/20180423/32847689/attachment.p7s>
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