HELP! PHP Mail() Broken after 9.0 upgrade

[eric0524]

After I upgraded to 9.0 now 9.0.2 (what ever). All of my php files that use the mail() function quite working. I use coffeecup form builder to build the forms and they all blow up. Anyone have any idea how I can fix this? Everything worked great when I was on the 8.x version. I guess it's the old, "if ain't broke don't fix it". But everyone wants bigger and better.