Ken,
Sorry to hear you're running into these problems. Hopefully, my response will help you troubleshoot.
I don't think either of these issues are related to upgrading Xeams. Just to recap, you're having two problems. Please correct me if I am wrong:
- Inability to send outbound emails to gmail.com
- Xeams shutdown
I'll answer #2 first. I see the following message in the log:
2022-02-05 14:11:37,267 INFO xeams.ServerStarter - Received message to terminate Rules Engine from unknown
This line indicates something on the machine is sending a terminate signal to Xeams. I would recommend checking the logs files in /var/log folder to see what is doing this. Once you know what is sending the "Terminate" signal, you will be able to fix this problem.
Problem 1: Check SMTPOutboundConversation.log to see why is gmail.com not accepting your messages. As far as I know, public servers like Gmail and Microsoft has enabled several security measures to prevent users from misusing their services and often ask uses to create application specific passwords. The SMTPOutboundConversation.log should be able to tell you if the is the password that is getting rejected.
I would also recommend checking OutboundAuditTrailFailure.log.
