Connecting to a smtp server RSS

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  yzidell

  Member

  620 Points

  422 Posts

  Connecting to a smtp server

  Jan 23, 2013 12:52 AM|LINK

  Hi,

  I am trying to connect to a smtp server that allows for smtp relays.

  I have already tried it using Thundrebird and it works.

  Now I have to do it using asp.net code to send emails.

  Here is my code so far:

  Dim basicAuthenticationInfo As New System.Net.NetworkCredential("user@mydomain.com", "Password")
  Dim Msg As MailMessage = New MailMessage()
  Dim MailObj As New SmtpClient("smtpout.secureserver.net", "465") 

  Msg.From = New MailAddress("user@mydomain.com, "user")
  Msg.Sender = New MailAddress("user@mydomain.com", "user")
  Msg.To.Add(New MailAddress("senduser@mydomain.com", "send userl")) 

  Msg.Subject = "Subject"
  Msg.IsBodyHtml = "True"
  Msg.Priority = MailPriority.Normal

  Msg.Body = "Body"

  MailObj.Credentials = CredentialCache.DefaultNetworkCredentials

  MailObj.EnableSsl = False

  MailObj.Send(Msg)

  and the result that I get is:

  Unable to read data from the transport connection: net_io_connectionclosed.

  Thanks for your help

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  cnranasinghe

  Star

  8885 Points

  1798 Posts

  Re: Connecting to a smtp server

  Jan 23, 2013 03:00 AM|LINK

  This may have some different causes. IIS, ISP, SPAM protection, Virus gaurd etc.

  check this thread

  http://forums.asp.net/t/924682.aspx/1

  • Marked as answer by Pengzhen Song - MSFT on Jan 29, 2013 06:13 AM
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  dyyo

  Participant

  1076 Points

  202 Posts

  Re: Connecting to a smtp server

  Jan 23, 2013 03:11 AM|LINK

  you change the SMTP port in your code:

  Dim MailObj As New SmtpClient("smtpout.secureserver.net", "465")

  into

  Dim MailObj As New SmtpClient("smtpout.secureserver.net")

  or

  Dim MailObj As New SmtpClient("smtpout.secureserver.net", "25")

  or

  Dim MailObj As New SmtpClient("smtpout.secureserver.net", "587")

  Regards,
  Dyyo - Microsoft Recommended ASP.NET Hosting
  
• • Reply
  

  Pengzhen Son...

  Star

  8140 Points

  837 Posts

  Microsoft

  Re: Connecting to a smtp server

  Jan 24, 2013 05:32 AM|LINK

  Hi,

  You can try opening SMTP Virtual Server properties and setting IP address of the Web server instead of "All Unassigned".

  Please refer this http://stackoverflow.com/questions/3165721/mailbox-unavailable-the-server-response-was-5-7-1-unable-to-relay-for-abcxyz

  Hope it can help you.

  Please mark the replies as answers if they help or unmark if not.
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