note 16723 modified in ref.mail by zak

For Windows users, you can likely set the SMTP directive in the php.ini configuration file to your isp's SMTP mail server - the same as you use for outgoing mail in your email client (Eudora, Outlook, etc.) . However, check with your ISP before doing this! eg SMTP = mail.your_isp.com --was-- In php.ini try setting SMTP to your isp's SMTP mail server - the same as you use for outgoing mail in outlook express or whatever you use. eg SMTP = mail.your_isp.com http://www.php.net/manual/en/ref.mail.php