ASP E-Mail

I am trying to set up a web site to have a visitor send me an inquiry via a form. I have replaced "mydomainname" with my actual domain and "password" with my Winhost password in the example below. This is part of the VB Code that I have created based on the Knowledge Base template:

set Mailer = Server.CreateObject("Persits.MailSender")
Mailer.Host = "mail.mydomainname.com"
Mailer.Username = "[email protected]"
Mailer.Password = "password"
Mailer.FromName = "[email protected]"
Mailer.From = "[email protected]"
Mailer.Subject = subject
Mailer.Body = body
On Error Resume Next
Mailer. Send
If Err <> 0 Then ' error occurred
Response.Write "Mail send failure. Error was " & Err.Description
Else
Response.Write "Mail sent..."
end if

I also want the e-mail sent to my Google E-Mail account vs. the Winhost Account.

When I click on the Form Submit button and execute my VB code I get the following error message:
"Mail send failure. Error was 503 Bad sequence of commands "

Can someone assist me? Thanks.