Php formmail not working suddently



My php formmail suddenly stopped working for no apparent reason. No error message, just never arrives. I am using SSL and the script was working fine until today. I tried another php script and same thing - mail never arrives. When I use the canned cgi script server, that one works. Might the php formmail not be working due to possible changes on the server? How do I resolve this? Dreamhost isnt answering my support requests.