I recently found out that Go Daddy is blocking all incoming mail with From: @yahoo.com addresses (among others) in PHP mail() headers. I'm desperately looking for a solution to this. I've tried PHPMailer and SwiftMailer in an attempt to send through gmail, but am unable to connect to a socket, and get PHP class error messages as well. I have a half dozen sites that I use for business currently using PHP mail() and hosted by Go Daddy. I didn't find out until two days ago that these emails were being rejected. I was able to get Jango to work, but it's too expensive of a solution for my needs.
Can anyone offer advice/solutions? I'm pulling my hair out here.