Sending email from ASP.NET(VB)

When I use the following code:

Dim strFrom = "[email protected]"
Dim strTo = "[email protected]"
Dim MailMsg As New MailMessage(New MailAddress(strFrom.Trim()), New MailAddress(strTo))
MailMsg.BodyEncoding = Encoding.Default
MailMsg.Subject = "This is a test"
MailMsg.Body = "This is a sample message using SMTP authentication"
MailMsg.Priority = MailPriority.High
MailMsg.IsBodyHtml = True
Dim SmtpMail As New SmtpClient
Dim basicAuthenticationInfo As New System.Net.NetworkCredential("[email protected]", "myPass")
SmtpMail.Host = "mail.myDomain.com"
SmtpMail.UseDefaultCredentials = False
SmtpMail.Credentials = basicAuthenticationInfo
SmtpMail.Send(MailMsg)

the email sends fine. But if I change

Dim strFrom = "[email protected]"
to
Dim strFrom = "[email protected]"

it doesn't.

Is there some setting on the email account itself that needs to be set in order to send an email?

 

Also just noticed I'm getting a lot of Delivery Failure messages with links to "Report a blocked message"
How do I set up my account to be able to send emails without this nonsense?

 

Really?

Anyway, I got it figured out I think. That stupid block message reply I mentioned earlier was being forwarded per a forward I set and deleted upon fwd so I never saw it. Once I filled out the form that link went to, it appears to have resolved itself.