On 2026-01-28 09:07, Aki Tuomi via dovecot wrote:
Hi!
To make migrating from Dovecot 2.3 to 2.4 a bit easier, we are now providing a
tool that helps upgrade your existing configuration. The tool allows you to
upload either a full dovecot.conf or selected ancillary configuration files
from a 2.3 setup, and will attempt to convert them accordingly.
You can find the tool here:
https://dovecot.org/upgrader/
We do not store any of the configurations processed by the tool, nor do we
track who uses it. It's offered as-is, without any warranty or guarantee.
If you run into any issues, unexpected results, or have feedback about the
tool, please let us know — it’s very much appreciated.
Please note that the tool can make mistakes, so we strongly recommend carefully
reviewing and testing the output before using it in production.
There are currently no plans to release this tool as open source.
Regards,
Aki Tuomi
Open-Xchange oy
Hello Aki,
I found some bugs with my config in the upgrade tool. Hope I mentioned
all of them. I can retest when fixed.
# Conversion tool problems on 7.2.2026:
################################################################################
userdb {
args = username_format=%n /etc/dovecot/users
driver = passwd-file
}
=>
userdb passwd-file {
driver = passwd-file
passwd_file_path = /etc/dovecot/users
# error here
# username_format: Unknown setting: username_format
(userdb_username_format or userdb_passwd-file_username_format not found
either.)
username_format = %{user | username}
}
################################################################################
plugin {
sieve = ~/.dovecot.sieve
sieve_after = /etc/dovecot/sieve_after.sieve
sieve_dir = ~/sieve
}
=>
# must be sieve_script with other parameters
# Unknown section name: sieve
sieve personal {
driver = file
path = ~/sieve
}
# must be sieve_script with other parameters
# Unknown section name: sieve
sieve after-0 {
driver = file
path = /etc/dovecot/sieve_after.sieve
type = after
}
################################################################################
protocol lda {
mail_debug = yes
=>
# error here:
# Invalid log_debug: event filter: syntax error, unexpected '=',
expecting end of file
log_debug = filter=category=mail
################################################################################
ssl_prefer_server_ciphers = yes
=>
# Error here
# prefer_ciphers: Invalid value: yes
prefer_ciphers = yes
Thnx.
Ciao,
Gerhard
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