Note that we are currently experiencing an email interruption due to an overzealous upstream Spam blocking service having blacklisted the entire 192.3.*.* IP range.
Our host is working to resolve this, but if it can not be done in a reasonable and timely manner we may a short outage while we are moved to a different address space.
Or worst case, we may have a more-than-brief outage while we move to a different host, again. Should be ample notice of that before hand though.