I was able to set up discourse using the bitnami docker image. As I was at the step where i’m trying to send a test email, and getting this error:
There was a problem sending the test email. Please double-check your mail settings, verify that your host is not blocking mail connections, and try again.
I’m using a server with a static IP on which the docker image is running. A Plesk server is used for the DNS entries and mailing.
The strange thing is, if I use another mailing service like Office365 or GMX, it’s working. But if I use different accounts on this plesk server or another domain on the same server, I always get the error above.
Deep down in the logs the real error is “Completed 422 Unprocessable Entity in 5929ms (Views: 0.6ms | ActiveRecord: 0.0ms | Allocations: 58765”.
Is there a way to find out what the exact error might be?