The input for each option is correct，but adding a mailbox failed.
Where can I find more detailed error logs for metabase?
In version 0.32, you can find logs and job tasks in Settings > Admin > Troubleshotting.
Depending on how you’re running Metabase, the actual log file might be located in the same directory as
metabase.jar or maybe
I installed it through docker, how to find the directory of the log？
I faced same issue, its was issue with the firewall to the mail server…
Can you tell me how you solved it?
It cannot connect to host
smtp.exmail.qq.com on port
When I try to telnet from my computer, then it also fails, so you need to check your firewall+DNS or contact your provider to make sure they’re not blocking you.