System stopped sending e-mail messages.
I've been using FreeBSD for a while but I really have never checked log messages or anything like that (I know, shame on me). So today I decided to check my mail (in /var/mail/someuser). I noticed that I had 19 new messages, so I checked all of them and everything seemed to be working just fine. But here's the problem: About a month ago, I changed the hostname of this machine, and I noticed that every since I changed hostnames, I've never got any new mail from the system. So the last message I got, is from about a month ago, and it was sent to my old hostname, while I've never got any new mail to the new hostname.
What could be going on?