Configuration is rather classic : usual 587 port and starttls is true (default value)
general configuration :
for group smtp :
I’ve been doing some tcpdump to see whats going on and I’m noticing 3 different behaviors. For the first two cases, it’s exactly as described in this thread.
- Normal usage
Users creates topics, responds, etc. other users receive email notifications as expected
Also, using the test send email through the administration interface : no problem it’s well sent and well received
with tcpdump we can see there is a correct sequence, connecting through STARTTLS, etc.
- Discourse-doctor and rake
using discourse-doctor or rake emails:test
Email is not sent and I have an error : 503 5.5.1 Invalid command: Command not supported
- group smtp
When testing the group smtp, I see a “DATA fragment” packet coming from Discourse immediatly after the tcp handshake, to which the smtp server responds with 220 xxxxxxx ESMTP OpenSMTPD followed by a 500 5.5.1 Invalid command: Pipelining not supported message