Actually this might be a problem!
@Jamie, it seems that SpamAssassin 4 in Debian 12 no longer has spamassassin.service but instead a new spamd.service is being used.
I can see that enable_spamd() sub is calling either, so it should work. However, we don’t enable spamassassin-maintenance.timer, which perhaps we should do!?
Also, I have fixed SpamAssassin Webmin config:
In Debian 12 there is no service called spamassassin.service . I tried to restart it but the only service starting with spam is spamd.service .
You can manually fix restart command in /etc/webmin/spam/config file. Thanks for the heads up!