Issue Mail management in Plesk keeps disabling itself automatically

[chazza]

Server operating system version

Debian 12

Plesk version and microupdate number

18.0.70 Update #2

hi all,

i'm running plesk on debian 12, and for some reason the mail management UI (Tools & Settings > Mail Server Settings > Enable mail management functions in Plesk) keeps switching itself off randomly. this means i keep losing access to the mail configuration tools in the panel.

i’ve already created a script and systemd service that re-enables it every 30 seconds using:

plesk bin server_pref -u -disable-mail-ui false

but obviously this is more of a workaround than a fix. does anyone know what could be causing plesk to keep disabling mail management like this?

is it a known bug, or could another extension, cron job, or service conflict be flipping the setting?

thanks in advance!