SpamAssassin fails to run with Systemd but works at CLI

I am trying to setup SpamAssassin on my mail server (Rocky Linux 9.5). Just a basic setup! This is the options variable at `/etc/sysconfig/spamassassin`:

SPAMDOPTIONS="-d -c -m5 -H --create-prefs --max-children 2 -u spamd -g spamd --socketpath=/var/lib/spamassassin/spamd.sock --socketowner=spamd --socketgroup=spamd --socketmode=0666 -s /var/log/spamd.log --debug"

> `--debug` was added temporarity When I start SpamAssassin using `systemctl`, it exits with random errors and systemd restarts it again, I put the truncated log below:

.
.
Fri Feb 14 19:59:03 2025  info: spamd: server successfully spawned child process, pid 2135
Fri Feb 14 19:59:03 2025  dbg: prefork: child 2135: entering state 0
Fri Feb 14 19:59:03 2025  dbg: prefork: new lowest idle kid: none
Fri Feb 14 19:59:03 2025  dbg: spamd: Privilege de-escalation from user 0 and groups 0
Fri Feb 14 19:59:03 2025  dbg: spamd: setgid ERRNO is 
Fri Feb 14 19:59:03 2025  dbg: util: get_user_groups: uid is 98
Fri Feb 14 19:59:03 2025  info: spamd: server successfully spawned child process, pid 2136
Fri Feb 14 19:59:03 2025  dbg: prefork: child 2136: entering state 0
Fri Feb 14 19:59:03 2025  dbg: prefork: new lowest idle kid: none
Fri Feb 14 19:59:03 2025  dbg: spamd: Privilege de-escalation from user 0 and groups 0
Fri Feb 14 19:59:03 2025  dbg: spamd: setgid ERRNO is 
Fri Feb 14 19:59:03 2025  dbg: util: get_user_groups: uid is 98
Fri Feb 14 19:59:03 2025  info: spamd: server killed by SIGTERM, shutting down
Fri Feb 14 19:59:04 2025  dbg: logger: successfully added file method
.
.

I decided to use the following command and run `spamd from cli` both foreground and daemonized, it worked flawlessly!

sudo -u spamd -- spamd -c -m5 -H --create-prefs --max-children 2 -u spamd -g spamd --socketpath=/var/lib/spamassassin/spamd.sock --socketowner=spamd --socketgroup=spamd --socketmode=0666 -s /var/log/spamd.log --debug

It also works correctly without `sudo`! Has anyone ran into similar issue with SpamAssassin or any other services?