Martin, I'm using LMTP and sieve, and I don't have a "sieve_lmtpsieve" plugin on my system either. The /usr/lib/dovecot/modules/sieve directory shows the same files as yours.
I wonder if there's a typo somewhere in your config that's making it try to load that module in error. You could try this command: sudo doveconf -n |grep lmtpsieve or this: sudo grep -r lmtpsieve /etc/dovecot When I run those commands, it doesn't return any matches. Hope that helps! Chad. On Tue, 23 Sep 2025 07:32:45 +0000 Martin Brampton via dovecot <[email protected]> wrote: > Thanks. The contents of 20-lmtp.conf (with comments removed): > > protocol lmtp { > mail_plugins { > sieve = yes > } > auth_username_format = %{user} > } > > Is that what you meant? > > >From logwatch: > > config: Fatal: Plugin 'sieve_lmtpsieve' not found from directory > /usr/lib/dovecot/modules/sieve: 10 Time(s) > > Referenced directory: > > root@mx:/etc/dovecot/conf.d# ls -l /usr/lib/dovecot/modules/sieve > total 136 > -rw-r--r-- 1 root root 71848 Jun 18 15:01 > lib10_sieve_storage_ldap_plugin.so -rw-r--r-- 1 root root 47192 Jun > 18 15:01 lib90_sieve_extprograms_plugin.so -rw-r--r-- 1 root root > 14424 Jun 18 15:01 lib90_sieve_imapsieve_plugin.so > > I don't see anything to do with lmtp there (which may make sense), > but don't know how I would add anything. > > Martin > > > On 23/09/2025 07:50, Aki Tuomi via dovecot wrote: > >> On 23/09/2025 08:56 EEST Martin Brampton via > >> dovecot<[email protected]> wrote: > >> > >> Just upgraded mail server from Debian 12 to 13. Fixed a number > >> of issues with changed Dovecot, but stuck getting sieve working. > >> The server uses LMTP. I’ll post some configuration if it helps. > >> > >> But the messages in the log saying the plugin sieve_lmtpsieve is > >> missing seems fundamental and relevant. I can’t find anything > >> called that in the Debian repository. How is it installed? Or am I > >> doing something fundamentally wrong? > >> > >> Martin > >> Just upgraded mail server from Debian 12 to 13. Fixed a number > >> of issues with changed Dovecot, but stuck getting sieve working. > >> The server uses LMTP. I'll post some configuration if it helps. > >> But the messages in the log saying the plugin sieve_lmtpsieve > >> is missing seems fundamental and relevant. I can't find anything > >> called that in the Debian repository. How is it installed? Or am I > >> doing something fundamentally wrong? > >> Martin > > > > Feels like you asked an LLM. Anyways this should work > > > > protocol lmtp { > > mail_plugins { > > sieve = yes > > } > > } > > > > Aki > > > > _______________________________________________ > > dovecot mailing list [email protected] > > To unsubscribe send an email [email protected] -- Chad Wallace Software Developer | The Lodging Company® P: +1 250 869 4931 ext. 251 TF: +1 888 676 9977 E: [email protected] W: www.lodgingcompany.com _______________________________________________ dovecot mailing list -- [email protected] To unsubscribe send an email to [email protected]
