Apparently Comcast decided this AM to suddenly block outbound mail connections on port 25 — the “usual” port we all use for sending e-mail.  Googling revealed that this is not uncommon, and neither is their apparent inabilty to, you know, tell anyone about this in advance.

To work around this I had to switch to using the alternate smtp “submission” port 587. Thankfully that basically entailed un-commenting one line in Postfix’s and reloading. And after banging head on desk a couple times, adding the correct line to the firewall config as well…

SSH Scanning

Wow… I’ve gotten a pretty constant stream of ssh attempts being blocked by DenyHosts. Must be some serious scanning happening out there… Almost all from Asia and the Baltics it seems.