Without any parameters journalctl outputs as follows
Jan 22 13:17:40 mx systemd[1]: Reloading pmgpolicy.service - Proxmox Mail Gateway Policy Daemon...
Jan 22 13:17:40 mx systemd-journald[465]: Time jumped backwards, rotating.
Jan 22 13:17:40 mx pmgpolicy[894951]: Received a SIG HUP
Jan 22 13:17:40 mx systemd[1]: Reloaded pmgpolicy.service - Proxmox Mail Gateway Policy Daemon.
Jan 22 13:17:40 mx pmgpolicy[894951]: 2025/01/22-13:17:40 Server closing!
Jan 22 13:17:40 mx pmgpolicy[894951]: 2025/01/22-13:17:40 Re-exec server during HUP
Jan 22 13:17:40 mx pmg-hourly[1256683]: start syncing ldap profile 'zimbra' (eposta.omu.edu.tr)
Jan 22 13:17:41 mx postfix/smtpd[1256089]: warning: hostname sn.dheera.in.net does not resolve to address 51.222.110.89: Name or service not known
Jan 22 13:17:41 mx postfix/smtpd[1256089]: connect from unknown[51.222.110.89]
Jan 22 13:17:41 mx postfix/smtpd[1256156]: connect from unknown[10.10.35.17]
Jan 22 13:17:41 mx postfix/smtpd[1256156]: 77D772815ED: client=unknown[10.10.35.17]
Jan 22 13:17:41 mx postfix/cleanup[1256012]: 77D772815ED: message-id=<>
Jan 22 13:17:41 mx postfix/qmgr[1075]: 77D772815ED: from=<
ebysotomasyon@omu.edu.tr>, size=864, nrcpt=1 (queue active)
Jan 22 13:17:41 mx pmg-smtp-filter[1256533]: 2025/01/22-13:17:41 CONNECT TCP Peer: "[127.0.0.1]:52754" Local: "[127.0.0.1]:10023"
Jan 22 13:17:41 mx postfix/smtpd[1256156]: disconnect from unknown[10.10.35.17] ehlo=1 mail=1 rcpt=1 data=1 quit=1 commands=5
Jan 22 13:17:41 mx pmg-smtp-filter[1256533]: 2815EE6790C5C583DA8: new mail message-id=
Jan 22 13:17:41 mx postfix/smtpd[1255732]: connect from localhost.localdomain[127.0.0.1]
Jan 22 13:17:41 mx postfix/smtpd[1255732]: 951142815EF: client=localhost.localdomain[127.0.0.1], orig_client=unknown[10.10.35.17]
Jan 22 13:17:41 mx postfix/cleanup[1256305]: 951142815EF: message-id=<
20250122101741.951142815EF@mx.omu.edu.tr>
Jan 22 13:17:41 mx postfix/qmgr[1075]: 951142815EF: from=<
ebysotomasyon@omu.edu.tr>, size=1119, nrcpt=1 (queue active)
Jan 22 13:17:41 mx postfix/smtpd[1255732]: disconnect from localhost.localdomain[127.0.0.1] ehlo=1 xforward=1 mail=1 rcpt=1 data=1 commands=5
Jan 22 13:17:41 mx pmg-smtp-filter[1256533]: 2815EE6790C5C583DA8: accept mail to <
sahaniraz.korkmaz@omu.edu.tr> (951142815EF) (rule: default-accept)
Jan 22 13:17:41 mx pmg-smtp-filter[1256533]: 2815EE6790C5C583DA8: processing time: 0.118 seconds (0, 0.053, 0)
Jan 22 13:17:41 mx postfix/lmtp[1254127]: 77D772815ED: to=<
sahaniraz.korkmaz@omu.edu.tr>, relay=127.0.0.1[127.0.0.1]:10023, delay=0.17, delays=0.01/0/0.04/0.12, dsn=2.5.0, status=sent (250 2.5.0 O>Jan 22 13:17:41 mx postfix/qmgr[1075]: 77D772815ED: removed
Jan 22 13:17:41 mx postfix/smtp[1256464]: 951142815EF: to=<
sahaniraz.korkmaz@omu.edu.tr>, relay=eposta.omu.edu.tr[193.140.28.32]:25, delay=0.21, delays=0.05/0/0.01/0.16, dsn=2.0.0, status=sent (25>Jan 22 13:17:41 mx postfix/qmgr[1075]: 951142815EF: removed
Jan 22 13:17:42 mx pmgpolicy[894951]: WARNING: Pid_file created by this same process. Doing nothing.
Jan 22 13:17:42 mx pmgpolicy[894951]: WARNING: Pid_file created by this same process. Doing nothing.
Jan 22 13:17:42 mx pmgpolicy[894951]: 2025/01/22-13:17:42 main (type Net::Server:
reForkSimple) starting! pid(894951)
Jan 22 13:17:42 mx pmgpolicy[894951]: Binding open file descriptors
Jan 22 13:17:42 mx pmgpolicy[894951]: Binding to TCP port 10022 on host 127.0.0.1 with IPv4
Jan 22 13:17:42 mx pmgpolicy[894951]: Reassociating file descriptor 8 with TCP on [127.0.0.1]:10022, using IPv4
Jan 22 13:17:42 mx pmgpolicy[894951]: Group Not Defined. Defaulting to EGID '0'
Jan 22 13:17:42 mx pmgpolicy[894951]: User Not Defined. Defaulting to EUID '0'
Jan 22 13:17:42 mx pmgpolicy[894951]: Setting up serialization via flock
Jan 22 13:17:42 mx pmgpolicy[894951]: Policy daemon (re)started
Jan 22 13:17:42 mx pmgpolicy[894951]: Beginning prefork (5 processes)
Jan 22 13:17:42 mx pmgpolicy[894951]: Starting "5" children
Jan 22 13:17:45 mx postfix/smtpd[1256156]: connect from unknown[10.10.35.14]
Jan 22 13:17:45 mx postfix/smtpd[1256156]: 22FC02815ED: client=unknown[10.10.35.14]
Jan 22 13:17:45 mx postfix/cleanup[1256305]: 22FC02815ED: message-id=<>
Jan 22 13:17:45 mx postfix/qmgr[1075]: 22FC02815ED: from=<
ebysotomasyon@omu.edu.tr>, size=826, nrcpt=1 (queue active)
Jan 22 13:17:45 mx pmg-smtp-filter[1256318]: 2025/01/22-13:17:45 CONNECT TCP Peer: "[127.0.0.1]:35690" Local: "[127.0.0.1]:10023"
Jan 22 13:17:45 mx postfix/smtpd[1256156]: disconnect from unknown[10.10.35.14] ehlo=1 mail=1 rcpt=1 data=1 quit=1 commands=5
Jan 22 13:17:45 mx postfix/postscreen[1255797]: CONNECT from [156.224.63.247]:53320 to [10.10.1.3]:25
Jan 22 13:17:45 mx postfix/postscreen[1255797]: PASS OLD [156.224.63.247]:53320
Jan 22 13:17:45 mx postfix/smtpd[1256567]: connect from unknown[156.224.63.247]
.....