Re: exim+dovecot+sieve issue

[Stephan Bosch via dovecot]

On 17/08/2019 15:37, JM via dovecot wrote:

Hi,

We have mail server in production, with Exim + Dovecot + Mailman + 
OpenLDAP + Roundcube webmail server.
Openldap keeps mail accounts in db, exim uses lmtp transport to 
deliver messages to dovecot.
Mailman is responsible for mailing lists, Roundcube webmail has 
managsieve module to create sieve filters.


Exim router,transport for dovecot

localuser:
  driver = accept
  domains = +local_domains : +virt_domains
  check_local_user
  transport = dovecot_lmtp
  cannot_route_message = Unknown account
  no_more


dovecot_lmtp:
  driver = lmtp
  socket = /var/spool/dovecot/lmtp
  batch_max = 500
  rcpt_include_affixes


It worked perfectly, but after upgrade from Dovecot 2.2 to Dovecot 2.3 
major version, I've found a lot of strange errors in exim panic.log


mail exim[7821]  Failed to get user name for uid 1175
mail exim[7880]: Failed to get user name for uid 1173

etc
where uids are ldap accounts and recognized by system (id 1175 shows 
user's name and group)


Even worse, some clients start to receive notify email with strange 
content, when sending email to mailing lists


u...@domain.com 
    Delay reason: error in redirect data: malformed address:
someus...@domain.com  may not follow
someus...@domain.com   in
"someus...@domain.com  ..some crap
here.." , where someuser addresses are not related to recipient
address and unknown for sender.


After some investigation,I've found out that dovecot's sieve produces 
these errors (I suspect sieve vacation, when user creates vacation via 
Roundcube webmail).


Found out how? It doesn't look like a Pigeonhole or Dovecot error 
message to me.


If set "submission_host = exim ip" in dovecot.conf, exim doesn't 
produce errors in panic.log anymore, but clients still receive email 
with malformed address.
Please help me to find the root of the problem (some broken sieve 
filter in user's maildir, misconfiguration or breaking changes in new 
Dovecot version?)


Do  you have an example of a malformed address?

What is your exact Dovecot configuration (output from `dovecot -n`).

Regards,

Stephan.

exim+dovecot+sieve issue

[JM via dovecot]

Hi,

We have mail server in production, with Exim + Dovecot + Mailman + OpenLDAP
+ Roundcube webmail server.
Openldap keeps mail accounts in db, exim uses lmtp transport to deliver
messages to dovecot.
Mailman is responsible for mailing lists, Roundcube webmail has managsieve
module to create sieve filters.

Exim router,transport for dovecot

> localuser:
>   driver = accept
>   domains = +local_domains : +virt_domains
>   check_local_user
>   transport = dovecot_lmtp
>   cannot_route_message = Unknown account
>   no_more


> dovecot_lmtp:
>   driver = lmtp
>   socket = /var/spool/dovecot/lmtp
>   batch_max = 500
>   rcpt_include_affixes


It worked perfectly, but after upgrade from Dovecot 2.2 to Dovecot 2.3
major version, I've found a lot of strange errors in exim panic.log

> mail exim[7821]  Failed to get user name for uid 1175
> mail exim[7880]: Failed to get user name for uid 1173

etc
where uids are ldap accounts and recognized by system (id 1175 shows user's
name and group)

Even worse, some clients start to receive notify email with strange
content, when sending email to mailing lists

>  u...@domain.com
> Delay reason: error in redirect data: malformed address:
> someus...@domain.com may not follow someus...@domain.com  in "
> someus...@domain.com ..some crap here.." , where someuser addresses are
> not related to recipient address and unknown for sender.


After some investigation,I've found out that dovecot's sieve produces these
errors (I suspect sieve vacation, when user creates vacation via Roundcube
webmail).
If set "submission_host = exim ip" in dovecot.conf, exim doesn't produce
errors in panic.log anymore, but clients still receive email with malformed
address.
Please help me to find the root of the problem (some broken sieve filter in
user's maildir, misconfiguration or breaking changes in new Dovecot
version?)

Current software
Gentoo  with 4.14.90 kernel
Dovecot-2.3.7.1
Exim-4.92.1
Mailman 2.1.29
Openldap-2.4.47
Roundcube-1.3.8

Dovecot.conf attached

Regards,
Juri


dovecot.conf
Description: Binary data