Not getting registration emails

I stopped getting registration or withdrawal emails from both clubs I run. They worked fine for years, now, all of a sudden, nothing.

All your match admin emails are being sent out by our email/server system, both to shooters and from the system to you.
I would direct you to your email host of
Yes, it is a thing that some hosts reject emails from our servers for numerous reasons.
Most notably Hotmail, Yahoo, aol and similar systems. It seems Live is acting similarly
Gmail has always worked with us. You might consider using a gmail address as your PS email.