We're using DreamHost for osTicket. We started having a problem with incoming emails to osTicket getting stuck in the DreamHost webmail inbox (outgoing still seems to work correctly). Their support agent suspects it's because they recently updated to TLS 1.2.
Can anyone confirm that this is a logical hypothesis?
Lately, we've had a few clients who have said they weren't getting our emails (replies from osTicket). I didn't see any error message - no mailerdaemon, no mailing errors in the system logs, etc.
I tested this issue by creating a ticket under my personal email. I sent a reply to myself after the ticket was created and it did not come through my email (not spam, junk, etc). The following two replies, however, did show up in my inbox as expected.
I'm on v1.15.1 and on Apache. We're using Dreamhost if that matters.
What other steps should I do to troubleshoot this? I'm not even sure where to look next. It seems really hit or miss and makes it hard to trust that the system is working, which makes me worry that we're missing out on things from our clients and they're missing stuff from us.
