Is there any answer to my problem with sieve not working with Dovecot
2.4.1 from Debian 13?
I have twice been told that it will work if my configuration includes:
protocol lmtp {
mail_plugins {
sieve = yes
}
}}
But that has always been present. There is one and only one entry for
protocol lmtp.
It still makes no sense to me that logs complain about a non-existent
module - it is not referenced anywhere in the configuration.
Is there any solution or must I downgrade to Dovecot 2.3 to have a
properly working system?
Best regards, Martin
--
Martin Brampton, Black Sheep Research
mar...@black-sheep-research.com
https://black-sheep-research.com
Tel: +44 1653 524272
Mobile: +44 7771 787010
Office: 4 York Road, Malton, North Yorkshire, YO17 6AX, UK.
On Sunday, Sep 28, 2025 at 7:26 am, Aki Tuomi via dovecot
<[1]dovecot@dovecot.org> wrote:
On 28/09/2025 04:36 EEST John via dovecot <dovecot@dovecot.org> wrote:
Debian dovecot 2.4.1 /etc/dovecot/conf.d/20-lmtp.conf has the lines
"mail_plugin" and "sieve = yes" commented-out by default.
dovecot.conf should have a line at the bottom "!include_try
local.conf". Uncomment this line. Place the above lines in
/etc/dovecot/local.conf.
Always run doveconf for syntax correctness. Invalid syntax in
dovecot.conf will log.
FYI: Many dovecot sections and variables can be overridden by later
occurrences, but some are not. I run dovecot on Debian. Debian
dovecot.conf concatenates conf.d/* into one file. The "passwd pam" {
... } cannot be overridden.
Always run doveconf to see how many passwd and userdb sections
show-up.
Pro-tip: Remove the include conf.d/* lines in dovecot.conf. and just
manually concatenate the conf.d/* lines in dovecot.conf. Everything in
one place and your configuration won't break when an upgrade occurs.
Do you want to have many changes in multiple files under conf.d/*?
I filed a security bug with dovecot 2.4.1. I have not heard back. I
read that I am supposed to file this kind of bug with the Linux
Distro, Debian. The bug is 2.4.1 will give the same uid/gid to any
account after the first authentication. Everyone else gets the same
uid/gid and all clients start downloading the folders/email of this
first uid/gid.
2.4.1 is not production ready.
Stay with 2.3.+ until it is ready.
Such bug has not been reported to us yet, but it sounds overly broad.
Lets see if someone sends this to our way as well.
Aki
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