In the smtp.class.php file, you need to change the word HELO to EHLO in 2 places! Where is the smtp.class.php file located? can't find it in root?

Question

SMTP

In the smtp.class.php file, you need to change the word HELO to EHLO in 2 places! Where is the smtp.class.php file located? I can't find it in root.