Unexpected behavior with sieve_vacation_to_header_ignore_envelope = yes
Hello,
we face an issue with the vacation extension of pigeonhole. Our upstream mail server (from which we pull our E-Mails with POP3) uses SPF and performs a SRS re-write of the Return Path. Once the mail is processed via our local postfix, it is delivered via dovecot deliver (using the lda). When the recipient has a vacation rule enabled in sieve, the out-of-office note cannot be sent, as pigeonhole tries to use the Return-Path (which is not accepted as sender by the mail server).
We are using the following dovecot / pigeonhole versions:
dovecot-2.3.2.1 dovecot-pigeonhole-0.5.2
As of my understanding, the problem was addressed in pigeonhole version v0.4.21 by introducing the sieve_vacation_to_header_ignore_envelope setting. Anyway - even when this is set to "yes" pigeonhole still uses the Return-Path instead of the "From:" header which I had expected:
Feb 27 13:22:26 mail dovecot: lda(customer)<48383><3o+yOQGBdlz/vAAAZU03Dg>: Error: sieve: msgid=<e081d2ba-21d5-c32b-3750-69fe0c8a76d2@petermann-it.de>: failed to send vacation response to SRS0=gwGXg6ad=RC=petermann-it.de=matthias@example.com: <Sendmail program returned error> (temporary error)
Are my expectations wrong or did I miss some precondition?
Best regards, Matthias
- This is the email which I use to test (I replaced the actual domain with example.com):
------>8------------------------------------------------------------------------------ Return-Path: <SRS0=gwGXg6ad=RC=petermann-it.de=matthias@example.com> Delivered-To: customer[[@example.com]] To: Customer <customer@example.com> From: Matthias Petermann <matthias@petermann-it.de> Subject: Test Message-ID: <e081d2ba-21d5-c32b-3750-69fe0c8a76d2@petermann-it.de> Date: Wed, 27 Feb 2019 05:21:45 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1
Test message ------8<------------------------------------------------------------------------------
- The related excerpt of the configuration:
------>8------------------------------------------------------------------------------ mail /usr/local/etc/dovecot/conf.d >doveconf | grep -A 10 -B 10 to_header_ignore_envelope result_failure = continue result_internalfail = continue result_success = return-ok skip = never username_filter = } plugin { acl = vfile acl_shared_dict = file:/var/lib/dovecot/shared-mailboxes sieve = file:/srv/vmail/%u/sieve;active=/srv/vmail/%u/active.sieve sieve_vacation_to_header_ignore_envelope = yes } pop3_client_workarounds = pop3_delete_type = default pop3_deleted_flag = pop3_enable_last = no pop3_fast_size_lookups = no pop3_lock_session = no pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s pop3_no_flag_updates = no pop3_reuse_xuidl = no ------8<------------------------------------------------------------------------------
-- Matthias Petermann <matthias@petermann-it.de>
Op 27/02/2019 om 13:30 schreef Matthias Petermann via dovecot:
Hello,
we face an issue with the vacation extension of pigeonhole. Our upstream mail server (from which we pull our E-Mails with POP3) uses SPF and performs a SRS re-write of the Return Path. Once the mail is processed via our local postfix, it is delivered via dovecot deliver (using the lda). When the recipient has a vacation rule enabled in sieve, the out-of-office note cannot be sent, as pigeonhole tries to use the Return-Path (which is not accepted as sender by the mail server).
We are using the following dovecot / pigeonhole versions:
dovecot-2.3.2.1 dovecot-pigeonhole-0.5.2
As of my understanding, the problem was addressed in pigeonhole version v0.4.21 by introducing the sieve_vacation_to_header_ignore_envelope setting. Anyway - even when this is set to "yes" pigeonhole still uses the Return-Path instead of the "From:" header which I had expected:
Feb 27 13:22:26 mail dovecot: lda(customer)<48383><3o+yOQGBdlz/vAAAZU03Dg>: Error: sieve: msgid=<e081d2ba-21d5-c32b-3750-69fe0c8a76d2@petermann-it.de>: failed to send vacation response to SRS0=gwGXg6ad=RC=petermann-it.de=matthias@example.com: <Sendmail program returned error> (temporary error)
Are my expectations wrong or did I miss some precondition?
That setting is only about the composition of the "To:" header for the outgoing vacation message (it's in the name). It has nothing to do with the RCPT TO envelope address used for that message. Why exactly do the mail servers reject the vacation message (I am not too familiar with SRS).
Regards,
Stephan.
Best regards, Matthias
- This is the email which I use to test (I replaced the actual domain with example.com):
------>8------------------------------------------------------------------------------
Return-Path: <SRS0=gwGXg6ad=RC=petermann-it.de=matthias@example.com> Delivered-To: customer[[@example.com]] To: Customer <customer@example.com> From: Matthias Petermann <matthias@petermann-it.de> Subject: Test Message-ID: <e081d2ba-21d5-c32b-3750-69fe0c8a76d2@petermann-it.de> Date: Wed, 27 Feb 2019 05:21:45 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1
Test message ------8<------------------------------------------------------------------------------
- The related excerpt of the configuration:
------>8------------------------------------------------------------------------------
mail /usr/local/etc/dovecot/conf.d >doveconf | grep -A 10 -B 10 to_header_ignore_envelope result_failure = continue result_internalfail = continue result_success = return-ok skip = never username_filter = } plugin { acl = vfile acl_shared_dict = file:/var/lib/dovecot/shared-mailboxes sieve = file:/srv/vmail/%u/sieve;active=/srv/vmail/%u/active.sieve sieve_vacation_to_header_ignore_envelope = yes } pop3_client_workarounds = pop3_delete_type = default pop3_deleted_flag = pop3_enable_last = no pop3_fast_size_lookups = no pop3_lock_session = no pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s pop3_no_flag_updates = no pop3_reuse_xuidl = no ------8<------------------------------------------------------------------------------
Hello Stephan,
Am 03.03.2019 um 00:50 schrieb Stephan Bosch via dovecot:>
Op 27/02/2019 om 13:30 schreef Matthias Petermann via dovecot:
Hello,
we face an issue with the vacation extension of pigeonhole. Our upstream mail server (from which we pull our E-Mails with POP3) uses SPF and performs a SRS re-write of the Return Path. Once the mail is processed via our local postfix, it is delivered via dovecot deliver (using the lda). When the recipient has a vacation rule enabled in sieve, the out-of-office note cannot be sent, as pigeonhole tries to use the Return-Path (which is not accepted as sender by the mail
We are using the following dovecot / pigeonhole versions:
dovecot-2.3.2.1 dovecot-pigeonhole-0.5.2
As of my understanding, the problem was addressed in pigeonhole version v0.4.21 by introducing the sieve_vacation_to_header_ignore_envelope setting. Anyway - even when this is set to "yes" pigeonhole still uses the Return-Path instead of the "From:" header which I had expected:
Feb 27 13:22:26 mail dovecot: lda(customer)<48383><3o+yOQGBdlz/vAAAZU03Dg>: Error: sieve: msgid=<e081d2ba-21d5-c32b-3750-69fe0c8a76d2@petermann-it.de>: failed to send vacation response to SRS0=gwGXg6ad=RC=petermann-it.de=matthias@example.com: <Sendmail program returned error> (temporary error)
Are my expectations wrong or did I miss some precondition?
That setting is only about the composition of the "To:" header for the outgoing vacation message (it's in the name). It has nothing to do with the RCPT TO envelope address used for that message. Why exactly do
server). the > mail servers reject the vacation message (I am not too familiar with SRS). Thanks for the clarification. In the postfix log, it states the following reason for rejection:
Mar 3 08:34:34 mail postfix/smtpd[28049]: NOQUEUE: reject: RCPT from unknown[10.0.0.2]: 550 5.1.1 <SRS0=gwGXg6ad=RC=petermann-it.de=matthias@example.com>: Recipient address rejected: User unknown; from=<> to=<SRS0=gwGXg6ad=RC=petermann-it.de=matthias@example.com> proto=ESMTP helo=<mail>
So it seems that the RCPT TO is rejected because the server (relay) doesn't accept the SRS adress as recipient.
Is there any way to manipulate the RCPT TO from pigeonhole to match the To header? Seems like I have to look into postfix if there is a way to decode the RCTP TO. Unfortunately, I am still not too knowledgeable about SRS, but will try to find out more.
Best regards, Matthias
-- Matthias Petermann <matthias@petermann-it.de>
participants (2)
-
Matthias Petermann
-
Stephan Bosch