This is the error message i get when i tried to send mail:
mx.google.com gave this error: [105.xx.xx.xx] The IP you're using to send mail is not authorized to send email directly to our servers. Please use the SMTP relay at your service provider instead. Learn more at http://support.google.com/mail/bin/answer.py?answer=10336 cg16si9170626wjb.99 - gsmtp Your message wasn't delivered due to a permission or security issue. It may have been rejected by a moderator, the address may only accept e-mail from certain senders, or another restriction may be preventing delivery.