How to determine if e-mail was sent OK

[Robert Dufour]

With system.web.mail in VS2003, doing some tests, using localhost from IIS
as server, I noticed that my code queues the messages OK, but when changing
sender addresses I see that the mail message ends up in the Bad folder. I
need to know when that happens since the e-mails are of critical importance.
How can I detect in my code, if an e-mail got queued but the actual
transmission from the server was unsuccessfull and how can I find what the
reason for the failure was?

Any help would be appreciated,

Bob

 

[vbnetdev]

authenticate and avoid the problem entirely....1.1 and above

Private Sub Page_Load(sender As Object, e As System.EventArgs)
Dim mail As New MailMessage()
mail.To = "(e-mail address removed)"
mail.From = "(e-mail address removed)"
mail.Subject = "this is a test email."
mail.Body = "Some text goes here"
mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate",
"1") 'basic authentication
mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername",
"my_username_here") 'set your username here
mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword",
"super_secret") 'set your password here
SmtpMail.SmtpServer = "mail.mycompany.com" 'your real server goes here
SmtpMail.Send(mail)
End Sub 'Page_Load

 

[Guest]

Thanks for code but I don't understand what Username and Password the code
refers to? Can you help me to understand.

 

[vbnetdev]

The username and password used to access the email account for that mail
server.

 

[cj]

I'm interested in your code but don't understand the
"http://schemas...." you have in it. This is what I've been using. Can
you explain the difference? Mine works. Just curious.

Dim msg As New System.Net.Mail.MailMessage
Dim smtp As New System.Net.Mail.SmtpClient
msg.From = New System.Net.Mail.MailAddress("cj@my_co.com")
msg.To.Add("Sally@my_co.com,Bob@his_co.com")
msg.Subject = "This is a test"
msg.Body = "This is only a test" & vbcrlf & "1 2 3"
smtp.Host = "smtp.my_co.com"
smtp.Port = 25
smtp.DeliveryMethod = Net.Mail.SmtpDeliveryMethod.Network
smtp.Credentials = New
System.Net.NetworkCredential("me@my_co.com", "my_pass")
smtp.Send(msg)

 

[cj]

actually "me@my_co.com" should be "cj@my_co.com" just example names
anyway but the same address is used from msg.from and in the network
credential.