So I am a web designer and host about 15 different sites for clients along with their emails on Host Gator. Seems ok EXCEPT....every time one of my clients uses Mac Mail.APP to check one of their email accounts it takes down ALL of my hosted sites. Error 500. I have spoken to host gator and they said that it is Mail.APP that keeps checking for mails continuously and uses up all connections or something. I can not possibly email all of my clients and tell them not to use Mail.APP to check their email. Has anyone else had this problem?? I do not know what to do =/ ..it does not happen with any there email clients.