I have an account with Windows 2008, IIS 7 and PHP.
Using Joomla and PHPMailer I can successfully send emails but never receive them.
Using PHPMailer I was able to determine that I could successfully authenticate and then it would send an email.
I tried sending to my work domain. geekpower.ca and to gmail.com both never receive the email. Not in the inbox or junk box.
I had a problem before on another server where PHP's mail function would return true. It turned out that the smtp server successfully received the email but when it contacted the receiving smtp server it was silently dropped.
I have not had this problem with Joomla before.
I'm not sure how to trouble shoot this or figure out why the emails are not being sent.
Settings I am using are: