The way to separate the local and domain parts, then, is to use the strrpos function to find the last at sign in the e-mail string. Listing 3 provides a better method for splitting the local part and ...

The mail function in PHP 4.x to 4.2.2 may allow local script authors to bypass safe mode restrictions and modify command line arguments to the MTA (such as Sendmail) in the fifth argument to mail (), ...