Hi everyone,
we have a duplicate e-mail problem with Dovecot 2.2.13 (LMTP as MDA) on
a Debian 8 server.
Our users are on external LDAP.
We just need to setup a vacation responder (with Sieve) for our
employees with a redirect to an alias (a distribution list), let's call
it /LIST at domain.com/, that comprehends even the user that just activated
the out of office.
This generates a loop: when someone write to LIST at domain.com every user
of the aforementioned distribution list receives a duplicate e-mail
generated from the sieve script of the user with vacation responder
active that contains the redirect to LIST at domain.com.
We just tried activating the duplicate extension into sieve script but
the redirected e-mail has a different MSG-ID and it's not recognized as
a duplicate by the server.
Our dovecot conf is:
/# 2.2.13: /etc/dovecot/dovecot.conf
auth_mechanisms = plain login
default_vsz_limit = 512 M
disable_plaintext_auth = no
dotlock_use_excl = no
info_log_path = /var/log/dovecot-info.log
log_path = /var/log/dovecot.log
mail_fsync = never
mail_location = maildir:~/Maildir
mail_max_userip_connections = 50
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope
encoded-character vacation subaddress comparator-i;ascii-numeric
relational regex imap4flags copy include variables body enotify
environment mailbox date ihave duplicate
mmap_disable = yes
passdb {
? args = /etc/dovecot/dovecot-ldap.conf
? driver = ldap
}
passdb {
? args = /etc/dovecot/dovecot-ldap-archive.conf
? driver = ldap
}
plugin {
? sieve = file:/var/www/html/ooo/%n/script
? sieve_dir = /var/www/html/ooo/%n/
? sieve_duplicate_default_period = 1m
? sieve_duplicate_max_period = 1d
? sieve_extensions = +vnd.dovecot.duplicate +notify +imapflags
+vacation-seconds
? sieve_global = /etc/dovecot/sieve/
? sieve_max_redirects = 10
? sieve_user_log = file:/var/www/html/ooo/%n/sieve_error.log
? sieve_vacation_default_period = 1d
? sieve_vacation_max_period = 90d
? sieve_vacation_min_period = 5s
}
protocols = imap pop3 lmtp sieve
service auth {
? unix_listener /var/spool/postfix/private/auth {
??? group = postfix
??? mode = 0660
??? user = postfix
? }
? unix_listener auth-master {
??? group = vmail
??? mode = 0660
??? user = vmail
? }
? user = root
}
service imap-login {
? process_limit = 200
}
service lmtp {
? executable = lmtp -L
? process_min_avail = 5
? unix_listener /var/spool/postfix/private/dovecot-lmtp {
??? group = postfix
??? mode = 0666
??? user = postfix
? }
? user = vmail
}
service managesieve-login {
? executable = /usr/lib/dovecot/managesieve-login
? inet_listener sieve {
??? port = 4190
? }
? process_min_avail = 10
? service_count = 1
}
service managesieve {
? executable = /usr/lib/dovecot/managesieve
}
ssl_cert = </etc/ssl/*xxxxxxxxxxxxxxxxxxxxxxxx*
ssl_cipher_list =
ALL:!LOW:!aNULL:!eNULL:!SSLv2:!RC4:!MD5:!DES:!EXP:!SEED:!IDEA:!3DES
ssl_key = </etc/ssl/private/*xxxxxxxxxxxxxxxxxx*
userdb {
? args = /etc/dovecot/dovecot-ldap.conf
? driver = ldap
}
userdb {
? args = /etc/dovecot/dovecot-ldap-archive.conf
? driver = ldap
}
protocol lda {
? auth_socket_path = /var/run/dovecot/auth-master
? hostname = *xxxxxxxxxxxxxxxxx*
? info_log_path = /var/log/dovecot-lda.log
? log_path = /var/log/dovecot-lda-errors.log
? mail_plugins = " autocreate sieve quota"
}
protocol lmtp {
? info_log_path = /var/log/dovecot-lmtp.log
? log_path = /var/log/dovecot-lmtp-errors.log
? mail_plugins = " autocreate sieve quota"
? postmaster_address = postmaster@*xxxxxxxxxx*
}
protocol sieve {
? info_log_path ? log_path ? mail_max_userip_connections = 10
? managesieve_implementation_string = dovecot
? managesieve_logout_format = bytes=%i/%o
? managesieve_max_compile_errors = 5
? managesieve_max_line_length = 65536
}/
An example of user sieve script is:
/require
["vnd.dovecot.duplicate","copy","fileinto","vacation-seconds"];
# rule:[Outofoffice]
if true
{
??? vacation :addresses "xxxxxxx at domain.tld" :subject
"Automatic Reply"
text:
/
/<Text here>
.
;
??? fileinto "INBOX";/
/??? redirect "LIST at domain.com";/
/}/
Please could someone give us support on the matter?
Removing the redirect from sieve user script is not an option :-)
Thanks
Cheers
--
*Claudio Corvino
IT Systems Administrator*
Trust Italia S.p.A. <https://www.trustitalia.it/>
*DigiCert Italian Affiliate
Certified Partner Platinum Elite*
Via Flaminia, 497 - 00191 Roma
*tel.: +39 06332287*
*fax: +39 063336145*
*e-mail: * ccorvino at trustitalia.it <mailto:ccorvino at trustitalia.it>
*website: * www.trustitalia.it <https://www.trustitalia.it>
Symantec Authentication Service
Le modalit? di trattamento dei dati a cui ? stato dato il consenso e le
relative finalit? sono consultabili al link
<https://www.trustitalia.it/archivio/legal_agreements/informativa_privacy_email_marketing.pdf>.
Qualora non desiderasse ricevere le nostre comunicazioni, potr?
comunicarlo mediante il seguente link
<https://www.trustitalia.it/site/info_css/05110101/revoca-del-consenso>.
Inoltre, in ogni momento, potr? modificare o cancellare i dati presenti
nel nostro archivio contattandoci all'indirizzo privacy at trustitalia.it
<mailto:privacy at trustitalia.it>
Se possibile non stamparmi! Se possibile, non stamparmi!
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On 26 Nov 2019, at 03:13, Claudio Corvino <ccorvino at trustitalia.it> wrote:> <body text=3D"#000000" bgcolor=3D"#FFFFFF">Please do not do this. -- IT DOES NOT SUCK TO BE YOU Bart chalkboard Ep. AABF13
On Tue, Nov 26, 2019, at 5:13 AM, Claudio Corvino via dovecot wrote:> > Hi everyone, > > we have a duplicate e-mail problem with Dovecot 2.2.13 (LMTP as MDA) on > a Debian 8 server. > > Our users are on external LDAP. > > We just need to setup a vacation responder (with Sieve) for our > employees with a redirect to an alias (a distribution list), let's call > it *LIST at domain.com*, that comprehends even the user that just > activated the out of office. > > This generates a loop: when someone write to LIST at domain.com every user > of the aforementioned distribution list receives a duplicate e-mail > generated from the sieve script of the user with vacation responder > active that contains the redirect to LIST at domain.com. > > We just tried activating the duplicate extension into sieve script but > the redirected e-mail has a different MSG-ID and it's not recognized as > a duplicate by the server. > > Our dovecot conf is: >[snip]> An example of user sieve script is: > > *require ["vnd.dovecot.duplicate","copy","fileinto","vacation-seconds"]; > # rule:[Outofoffice] > if true > { > vacation :addresses "xxxxxxx at domain.tld" :subject "Automatic Reply" text: > * > > *<Text here> > . > ; > fileinto "INBOX";* > > * redirect "LIST at domain.com";* > > *}* >You've not used the duplicate test anywhere in your example. See the RFC for examples: https://tools.ietf.org/html/rfc7352#section-5 Specifically, example 3 might help: https://tools.ietf.org/html/rfc7352#section-5.3 but most simply, you can probably replace `if true` with `if not duplicate` V/r, James Cassell
> Corvino via dovecot <dovecot at dovecot.org>: > > # rule:[Outofoffice] > if trueIs this true check used to toggle the vacation responder by commenting/uncommenting the line above?
The "duplicate" test was removed because not working in this particular case, I already read the RFC but I didn't find anything useful for our case. I'll try replacing `if true` with `if not duplicate` into sieve script and I'll post back the result. The "true" check is used to enable the out of office rule, otherwise we use "if false # true" to disable it. Thanks -- *Claudio Corvino IT Systems Administrator* -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://dovecot.org/pipermail/dovecot/attachments/20191127/ea786600/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 4206 bytes Desc: S/MIME Cryptographic Signature URL: <https://dovecot.org/pipermail/dovecot/attachments/20191127/ea786600/attachment.p7s>
Atomia
2019-Dec-11 16:37 UTC
Ticket Received - [#22073] Re: Duplicate e-mail with Dovecot and Sieve
Hi Claudio Corvino via dovecot, We have received your request and a ticket
has been created with Ticket ID - 22073. A support representative will be
reviewing your request and will contact you shortly.
To view the status of the ticket or add comments, please visit?
https://support.atomia.com/helpdesk/tickets/22073
Speak to you soon,
Atomia Support Team
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