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Bounced Email Handling

Download Chilkat Bounce ActiveX

Demonstrates how to examine emails and detect which are bounced (automated) replies. Classifies each email according to the type of bounce.

Download Chilkat Email ActiveX

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
set bounce = Server.CreateObject("Chilkat.Bounce")

success = bounce.UnlockComponent("Anything for 30-day trial")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode(bounce.LastErrorText) & "</pre>"

End If

'  The mailman object is used for receiving (POP3)
'  and sending (SMTP) email.
set mailman = Server.CreateObject("Chilkat.MailMan2")

'  Any string argument automatically begins the 30-day trial.
success = mailman.UnlockComponent("30-day trial")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode(mailman.LastErrorText) & "</pre>"

End If

'  Set the POP3 server's hostname
mailman.MailHost = "mail.chilkatsoft.com"

'  Set the POP3 login/password.
mailman.PopUsername = "myLogin"
mailman.PopPassword = "myPassword"

'  Copy the all email from the user's POP3 mailbox
'  into a bundle object.  The email remains on the server.
'  (There are other methods for deleting email from a POP3 server.)
' bundle is a Chilkat.EmailBundle2
Set bundle = mailman.CopyMail()

If (bundle Is Nothing ) Then
    Response.Write "<pre>" & Server.HTMLEncode(mailman.LastErrorText) & "</pre>"

End If

For i = 0 To bundle.MessageCount - 1
    ' email is a Chilkat.Email2
    Set email = bundle.GetEmail(i)

    success = bounce.ExamineEmail(email)
    If (success = 0) Then
        Response.Write "<pre>" & Server.HTMLEncode(bounce.LastErrorText) & "</pre>"

    End If

    If (bounce.BounceType = 1) Then
        '  Hard bounce, log the email address
        Response.Write "<pre>" & Server.HTMLEncode( "Hard Bounce: " _
             & bounce.BounceAddress) & "</pre>"
    End If

    If (bounce.BounceType = 2) Then
        '  Soft bounce, log the email address
        Response.Write "<pre>" & Server.HTMLEncode( "Soft Bounce: " _
             & bounce.BounceAddress) & "</pre>"
    End If

    If (bounce.BounceType = 3) Then
        '  General bounce, no email address available.
        Response.Write "<pre>" & Server.HTMLEncode( "General Bounce: No email address") & "</pre>"
    End If

    If (bounce.BounceType = 4) Then
        '  General bounce, log the email address
        Response.Write "<pre>" & Server.HTMLEncode( "General Bounce: " _
             & bounce.BounceAddress) & "</pre>"
    End If

    If (bounce.BounceType = 5) Then
        '  Mail blocked, log the email address
        '  A bounce occured because the sender was blocked.
        Response.Write "<pre>" & Server.HTMLEncode( "Mail Blocked: " _
             & bounce.BounceAddress) & "</pre>"
    End If

    If (bounce.BounceType = 6) Then
        '  Auto-reply, log the email address
        Response.Write "<pre>" & Server.HTMLEncode( "Auto-Reply: " _
             & bounce.BounceAddress) & "</pre>"
    End If

    If (bounce.BounceType = 7) Then
        '  Transient (recoverable) Failure, log the email address
        Response.Write "<pre>" & Server.HTMLEncode( "Transient Failure: " _
             & bounce.BounceAddress) & "</pre>"
    End If

    If (bounce.BounceType = 8) Then
        '  Subscribe request, log the email address
        Response.Write "<pre>" & Server.HTMLEncode( "Subscribe Request: " _
             & bounce.BounceAddress) & "</pre>"
    End If

    If (bounce.BounceType = 9) Then
        '  Unsubscribe Request, log the email address
        Response.Write "<pre>" & Server.HTMLEncode( "Unsubscribe Request: " _
             & bounce.BounceAddress) & "</pre>"
    End If

    If (bounce.BounceType = 10) Then
        '  Virus Notification, log the email address
        Response.Write "<pre>" & Server.HTMLEncode( "Virus Notification: " _
             & bounce.BounceAddress) & "</pre>"
    End If

    If (bounce.BounceType = 11) Then
        '  Suspected bounce.
        '  This should be rare.  It indicates that the Bounce
        '  component found strong evidence that this is a bounced
        '  email, but couldn't quite recognize everything it
        '  needed to be 100% sure.  Feel free to notify
        '  support@chilkatsoft.com regarding emails having this
        '  bounce type.
        Response.Write "<pre>" & Server.HTMLEncode( "Suspected Bounce!") & "</pre>"
    End If

    If (bounce.BounceType = 12) Then
        '  Challenge/Response - Auto-reply message sent by SPAM software
        '  where only verified email addresses are accepted.
        Response.Write "<pre>" & Server.HTMLEncode( "Challenge: " _
             & bounce.BounceAddress) & "</pre>"
    End If

    If (bounce.BounceType = 13) Then
        '  Address Change Notification Message.
        Response.Write "<pre>" & Server.HTMLEncode( "Address Change: " _
             & bounce.BounceAddress) & "</pre>"
    End If

    If (bounce.BounceType = 14) Then
        '  Success DSN indicating that the message was successfully relayed.
        Response.Write "<pre>" & Server.HTMLEncode( "DSN Successful Relay: ") & "</pre>"
    End If

Next

mailman.Pop3EndSession 
%>
</body>
</html>
 

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