Sending mail to Yahoo!

[eluser]Thorpe Obazee[/eluser]
I've been testing out the mail class and thought it didn't work when testing emails to my email account. I got to create plugins for PHPMailer and Swiftmailer and they didn't seem to work at all.

However after trying to test sending emails to myself(another domain), everything worked out. My PHPMailer, Swiftmailer as well as the CI email class worked.

I wonder, what could be done so that I can send to Yahoo! accounts too. :|