One of our user received a valid email from firstname.lastname@example.org. But when he replied this email, I find the replied email is stucked in deferred queue. The Reason is: connect to pahgcc.memfirstweb.net[18.104.22.168]:25:connection timed out
Does anyone know why this issue happens? Is any possible to setup on server to send a notice or bounce the replied email to sender after 24~48 hour if replied email stuck in deferred queue?
Thanks so much!