This hasn't been answered. If my email is hosted on GMAIL APPS or Hotmail I assume this won't apply. Basically if its sent through the server? What if I set my site to send from the google smtp instead of x10's?
No, what you did was good. The mail servers are starting to be blocked everywhere and for good reasons. What I dislike it the automatic suspension policy... There are better ways to approach a problem that are less interrupting and spontaneous. It does benefit 99% of users, but I don't see why it has to affect that 1% in such an spontaneous way. There are my thoughts.