tl;dr: Emails weren’t being sent, the IPs of our new servers weren’t whitelisted. They’re whitelisted now, and emails should work.
Hi all!
I was just noticing that I wasn’t getting emails, so I asked a few other people from Community IT, none of them were getting them either. I looked into it, and it was related to our recent upgrade to Docker. When we moved to Docker, instead of using the same server, we created two new servers. The problem with this is that we got two new IPs to go along with the new servers.
We use Mandrill to handle mail, and I had set a whitelist to only accept mail sent from these two servers. When we created the new servers, I forgot to whitelist the new IP addresses. This meant that Mandrill would reject emails from the new servers, even though the emails were still being sent by Discourse.
This issue has been fixed, and mail should be coming through now. Please let me know if there are any issues.