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Mail Parser - NDR Parsing

This commit is contained in:
wrongecho 2026-01-15 17:35:13 +00:00
parent 1a93149643
commit e7f6f8a4c7
1 changed files with 96 additions and 2 deletions
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98
cron/ticket_email_parser.php
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@ -743,9 +743,103 @@ foreach ($messages as $message) {
// 5. Unknown sender allowed?
if (!$email_processed && $config_ticket_email_parse_unknown_senders) {
$bad_from_pattern = "/daemon|postmaster/i";
$bad_from_pattern = "/daemon|postmaster|bounce|mta/i"; // Stop NDRs with bad subjects raising new tickets
if (!preg_match($bad_from_pattern, $from_email)) {
$email_processed = addTicket(0, $from_name, $from_email, 0, $date, $subject, $message_body, $attachments, $original_message_file);
} else {
// Probably an NDR message without a ticket ref in the subject
$failed_recipient = null;
$diagnostic_code = null;
$status_code = null;
$original_subject = null;
$original_to = null;
// Webklex stores DSN info in attachments, not parts
foreach ($message->getAttachments() as $attachment) {
$ctype = strtolower($attachment->getContentType());
$body = $attachment->getContent() ?? '';
// 1. Delivery status block
if (strpos($ctype, 'delivery-status') !== false) {
if (preg_match('/Final-Recipient:\s*rfc822;\s*(.+)/i', $body, $m)) {
$failed_recipient = sanitizeInput(trim($m[1]));
}
if (preg_match('/Diagnostic-Code:\s*(.+)/i', $body, $m)) {
$diagnostic_code = sanitizeInput(trim($m[1]));
}
if (preg_match('/Status:\s*([0-9\.]+)/i', $body, $m)) {
$status_code = sanitizeInput(trim($m[1]));
}
}
// 2. Original message headers
if (strpos($ctype, 'message/rfc822') !== false) {
if (preg_match('/^To:\s*(.+)$/mi', $body, $m)) {
$original_to = sanitizeInput(trim($m[1]));
}
if (preg_match('/^Subject:\s*(.+)$/mi', $body, $m)) {
$original_subject = sanitizeInput(trim($m[1]));
}
}
}
// 3. Fallback: extract diagnostic from human-readable text/plain
if (!$diagnostic_code) {
$text = $message->getTextBody() ?? '';
// Exim puts diagnostics on an indented line
if (preg_match('/\n\s{2,}(.+)/', $text, $m)) {
$diagnostic_code = sanitizeInput(trim($m[1]));
}
}
// Fallbacks
$failed_recipient = $failed_recipient ?: 'unknown recipient';
$diagnostic_code = $diagnostic_code ?: 'unknown diagnostic code';
$status_code = $status_code ?: 'unknown status code';
$original_subject = $original_subject ?: $subject;
appNotify(
"Ticket",
"Email parser NDR: Message to $failed_recipient bounced. Subject: $original_subject Diagnostics: $status_code / $diagnostic_code - check ITFlow folder manually to see email",
"",
0
);
// If the original subject has a ticket, add the NDR there too
if (preg_match("/\[$config_ticket_prefix(\d+)\]/", $original_subject, $ticket_number_matches)) {
$ticket_number = intval($ticket_number_matches[1]);
// Craft a clean bounce message
$reply_body = "Email delivery failed.\n".
"Recipient: $failed_recipient\n".
"Status: $status_code\n".
"Diagnostic: $diagnostic_code\n";
// No attachments
addReply(
$from_email,
$date,
$original_subject,
$ticket_number,
$reply_body,
[]
);
}
$email_processed = true;
}
}
@ -810,5 +904,5 @@ echo "\nLock File Path: $lock_file_path\n";
if (file_exists($lock_file_path)) {
echo "\nLock is present\n\n";
}
echo "Processed Emails into tickets: $processed_count\n";
echo "Processed Emails: $processed_count\n";
echo "Unprocessed Emails: $unprocessed_count\n";