On all my fedora-38 machines sendmail is started at least three times (stopped two times).  This is apparently due to the NetworkManager-dispatcher.service, which calls scripts in /usr/lib/NetworkManager/dispatcher.d/ especially 10-sendmail:

---
#!/usr/bin/sh

case "$2" in
	up|down|vpn-up|vpn-down)
		/bin/systemctl --no-block try-restart sendmail.service || :
		;;
esac
---

Maybe sendmail.service should depend on network.target or network-online.target?

Reproducible: Always

Steps to Reproduce:
1. Configure and activate sendmail (including "systemctl enable sendmail")
2. Reboot machine
3. Execute "journalctl -b0 -u sendmail -u sm-client" (and note multiple starts)
Actual Results:  
Output shows that sendmail/sm-client are started at least three times and stopped two times.

Expected Results:  
Sendmail/sm-client should only be started once.