title: PHPMailer error attaching 22mb file size
body: <p>I made a php project which sends email and has an attachment by default.
  I'm using this Library <a href="https://github.com/PHPMailer/PHPMailer" rel="nofollow">https://github.com/PHPMailer/PHPMailer</a> . However when I tried to send a pdf file with a 22mb of size I get Internal 500 Server Error on my browser console. I tried using pdf files with less than 1mb of size and other files like jpg and it works fine. Only the 22mb file. What could be the problem? Is it on my php settings? and if yes, which one? Or is it on the library itself? 
  Thanks.</p>