This is the Error message I'm getting:
I am receiving them just fine its sending

The message could not be sent. The authentication setting might not be
correct for your outgoing e-mail [SMTP] server. For help solving this
problem, go to Help, search for "Troubleshoot Windows Mail", and read the
"I'm having problems sending e-mail" section. If you need help determining
the proper server settings, please contact your e-mail service provider.

The rejected e-mail address was 'boyimustbecrazy@gmail.com'. Subject
'Problems With the Autoform Application Site', Account: 'pop3', Server:
'smtp.gmail.com', Protocol: SMTP, Server Response: '530 5.7.0 Must issue a
STARTTLS command first. 10sm219472agb.36', Port: 25, Secure(SSL): No, Server
Error: 530, Error Number: 0x800CCC78