Cannot send eMails

[Thomas Weise]

My app attempts to send eMails via SmtpClient.
This works with some addresses, but for instance a mail server hosted by
godaddy always rejects the mails.
The reply is "Relay access denied".
Does anybody have an idea what the cause of the problem is, and how I can
work around?

Thanks in advance,
Thomas

Here is my code:
Declarations:
Public Structure struMailServer
Public SMTPServer As String
Public User As String
Public PW As String
Public From As MailAddress
End Structure
Private mTo As MailAddress
Private uServerInfo As struMailServer

Code:
(uServerInfo and mTo are set by previous procedures)
Dim message As New MailMessage(uServerInfo.From, mTo)
Dim emailClient As New SmtpClient(uServerInfo.SMTPServer)
Dim SMTPUserInfo As New
System.Net.NetworkCredential(uServerInfo.User, uServerInfo.PW)
emailClient.UseDefaultCredentials = False
emailClient.Credentials = SMTPUserInfo
message.Subject = sSubject
message.Body = sBody
emailClient.Send(message)

 

[Mr. Arnold]

My app attempts to send eMails via SmtpClient.
This works with some addresses, but for instance a mail server hosted by
godaddy always rejects the mails.
The reply is "Relay access denied".
Does anybody have an idea what the cause of the problem is, and how I can
work around?

The SMTP relay server is simply blocking e-mails sent to that address. I
don't know if you're trying to do this through a company LAN or you're going
through your ISP. But it's being blocked.

 

[Andrew Morton]

My app attempts to send eMails via SmtpClient.
This works with some addresses, but for instance a mail server hosted
by godaddy always rejects the mails.
The reply is "Relay access denied".
Does anybody have an idea what the cause of the problem is, and how I
can work around?

Maybe this thread is applicable to you:
http://groups.google.com/group/micr...dy+reject+email&rnum=8&hl=en#d9491c3c0281d72a

Andrew

 

[Thomas Weise]

Andrew,
Thanks for your help. On investigating by using Outlook as client on the
same mail server, I found that I probably have selected a too long password
when setting up the account...
Thomas.