title: Sending mail in PHP
body: <p>I am trying to send mail using PHP <code>mail()</code> function. I have install postfix, modified all of the required files as suggested by the <a href="https://help.ubuntu.com/community/Postfix" rel="nofollow">Ubuntu help docs</a>.</p>
  
  <p>I also changed my <code>php.ini</code> file to set the path of the <code>sendmail_path</code> to <code>sendmail_path = "/usr/sbin/sendmail -t -i"</code> but still I cannot send mail to my hotmail account or yahoo or gmail.<br>
  Edit:
  Stop down voting me ; even I do not know my problem . All I realized so far is that my ISP is blocking every port except 80 . If any one can help me mitigate that problem , it will be my pleasure .</p>