I have tested this, first I used gmail for my forum boards but confirmed with my host that this is not allowed.
So I changed it to email@example.com and tried to register a test user with an Outlook.com email address. Did not receive any email confirmation.
Its not a server issue since I wrote this script to test the sendmail function:
mail('firstname.lastname@example.org','Test sendmail message','This is some text.','From: email@example.com','-f firstname.lastname@example.org');
and my private gmail address receives the emails
actually edit, figured it out and thanks for the support~
Last edited by gladiator; 11/21/2014 3:31 PM.