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(Perl) Bounced Email Handling

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

Chilkat Perl Downloads

Perl Module for Windows, Linux, Alpine Linux,
MAC OS X, Solaris, FreeBSD, OpenBSD,
Raspberry Pi and other single board computers

use chilkat();

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$bounce = chilkat::CkBounce->new();

# The mailman object is used for receiving (POP3) 
# and sending (SMTP) email.
$mailman = chilkat::CkMailMan->new();

# Set the POP3 server's hostname
$mailman->put_MailHost("mail.chilkatsoft.com");

# Set the POP3 login/password.
$mailman->put_PopUsername("myLogin");
$mailman->put_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 EmailBundle
$bundle = $mailman->CopyMail();
if ($mailman->get_LastMethodSuccess() == 0) {
    print $mailman->lastErrorText() . "\r\n";
    exit;
}

$i = 0;

while ($i < $bundle->get_MessageCount()) {
    # email is a Email
    $email = $bundle->GetEmail($i);

    $success = $bounce->ExamineEmail($email);
    if ($success == 0) {
        print $bounce->lastErrorText() . "\r\n";

        exit;
    }

    if ($bounce->get_BounceType() == 1) {
        # Hard bounce, log the email address
        print "Hard Bounce: " . $bounce->bounceAddress() . "\r\n";
    }

    if ($bounce->get_BounceType() == 2) {
        # Soft bounce, log the email address
        print "Soft Bounce: " . $bounce->bounceAddress() . "\r\n";
    }

    if ($bounce->get_BounceType() == 3) {
        # General bounce, no email address available.
        print "General Bounce: No email address" . "\r\n";
    }

    if ($bounce->get_BounceType() == 4) {
        # General bounce, log the email address
        print "General Bounce: " . $bounce->bounceAddress() . "\r\n";
    }

    if ($bounce->get_BounceType() == 5) {
        # Mail blocked, log the email address
        # A bounce occured because the sender was blocked. 
        print "Mail Blocked: " . $bounce->bounceAddress() . "\r\n";
    }

    if ($bounce->get_BounceType() == 6) {
        # Auto-reply, log the email address
        print "Auto-Reply: " . $bounce->bounceAddress() . "\r\n";
    }

    if ($bounce->get_BounceType() == 7) {
        # Transient (recoverable) Failure, log the email address
        print "Transient Failure: " . $bounce->bounceAddress() . "\r\n";
    }

    if ($bounce->get_BounceType() == 8) {
        # Subscribe request, log the email address
        print "Subscribe Request: " . $bounce->bounceAddress() . "\r\n";
    }

    if ($bounce->get_BounceType() == 9) {
        # Unsubscribe Request, log the email address
        print "Unsubscribe Request: " . $bounce->bounceAddress() . "\r\n";
    }

    if ($bounce->get_BounceType() == 10) {
        # Virus Notification, log the email address
        print "Virus Notification: " . $bounce->bounceAddress() . "\r\n";
    }

    if ($bounce->get_BounceType() == 11) {
        # 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.
        print "Suspected Bounce!" . "\r\n";
    }

    if ($bounce->get_BounceType() == 12) {
        # Challenge/Response - Auto-reply message sent by SPAM software 
        # where only verified email addresses are accepted. 
        print "Challenge: " . $bounce->bounceAddress() . "\r\n";
    }

    if ($bounce->get_BounceType() == 13) {
        # Address Change Notification Message.
        print "Address Change: " . $bounce->bounceAddress() . "\r\n";
    }

    if ($bounce->get_BounceType() == 14) {
        # Success DSN indicating that the message was successfully relayed.
        print "DSN Successful Relay: " . "\r\n";
    }

    $i = $i + 1;
}

$success = $mailman->Pop3EndSession();

 

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