I’d just like to say at the outset that I know very little about Linux and running a server. I have a CenOS droplet on here running iRedmail and a basic holding web page. I set it up over a day or so following instructions on the Digital ocean forums and, for the most part, it has worked flawlessly for the past year or so.
Last night the iRedmail aspect stopped working. The server is still running, and I can log in to it, but all access to emails has stopped.
Before I spend ages looking at the server configuration, is there an infrastructure reason as to why this may be happening?
Thanks in advance, Lee