Thanks for reply.
In both roundcube and thunderbird email result as sent.
I've just tried again, This is the log;
2023-04-18 16:36:17 1pomRP-005qoE-0M <=
[email protected] H=localhost (vps.senderdomain.com) [127.0.0.1] P=esmtpa A=login:
[email protected] S=114366...