Since we recently upgraded the mail servers, it comes with a newer postfix that supports more rules aimed at stopping spam and forgery and I’ve added some of those.  Hopefully they will not break any legitimate mail, but if you do get reports of mail bounced, if you can get copies of the bounced messages to me with full headers, this will be very helpful in diagnosing any problems that may result.  Hopefully this will not happen, but if it does please know I need to have full headers to diagnose this kind of problem.