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+<?php
+if ( ! defined( 'ABSPATH' ) ) {
+ exit; // Exit if accessed directly
+}
+
+if (! class_exists ( 'PostmanSmtpMappings' )) {
+ class PostmanSmtpMappings {
+ // if an email is in this domain array, it is a known smtp server (easy lookup)
+ private static $emailDomain = array (
+ // from http://www.serversmtp.com/en/outgoing-mail-server-hostname
+ '1and1.com' => 'smtp.1and1.com',
+ 'airmail.net' => 'smtp.airmail.net',
+ 'aol.com' => 'smtp.aol.com',
+ 'Bluewin.ch' => 'Smtpauths.bluewin.ch',
+ 'Comcast.net' => 'Smtp.comcast.net',
+ 'Earthlink.net' => 'Smtpauth.earthlink.net',
+ 'gmail.com' => 'smtp.gmail.com',
+ 'Gmx.com' => 'mail.gmx.com',
+ 'Gmx.net' => 'mail.gmx.com',
+ 'Gmx.us' => 'mail.gmx.com',
+ 'hotmail.com' => 'smtp.live.com',
+ 'icloud.com' => 'smtp.mail.me.com',
+ 'mail.com' => 'smtp.mail.com',
+ 'ntlworld.com' => 'smtp.ntlworld.com',
+ 'rocketmail.com' => 'plus.smtp.mail.yahoo.com',
+ 'rogers.com' => 'smtp.broadband.rogers.com',
+ 'yahoo.ca' => 'smtp.mail.yahoo.ca',
+ 'yahoo.co.id' => 'smtp.mail.yahoo.co.id',
+ 'yahoo.co.in' => 'smtp.mail.yahoo.co.in',
+ 'yahoo.co.kr' => 'smtp.mail.yahoo.com',
+ 'yahoo.com' => 'smtp.mail.yahoo.com',
+ 'yahoo.com.ar' => 'smtp.mail.yahoo.com.ar',
+ 'yahoo.com.au' => 'smtp.mail.yahoo.com.au',
+ 'yahoo.com.br' => 'smtp.mail.yahoo.com.br',
+ 'yahoo.com.cn' => 'smtp.mail.yahoo.com.cn',
+ 'yahoo.com.hk' => 'smtp.mail.yahoo.com.hk',
+ 'yahoo.com.mx' => 'smtp.mail.yahoo.com',
+ 'yahoo.com.my' => 'smtp.mail.yahoo.com.my',
+ 'yahoo.com.ph' => 'smtp.mail.yahoo.com.ph',
+ 'yahoo.com.sg' => 'smtp.mail.yahoo.com.sg',
+ 'yahoo.com.tw' => 'smtp.mail.yahoo.com.tw',
+ 'yahoo.com.vn' => 'smtp.mail.yahoo.com.vn',
+ 'yahoo.co.nz' => 'smtp.mail.yahoo.com.au',
+ 'yahoo.co.th' => 'smtp.mail.yahoo.co.th',
+ 'yahoo.co.uk' => 'smtp.mail.yahoo.co.uk',
+ 'yahoo.de' => 'smtp.mail.yahoo.de',
+ 'yahoo.es' => 'smtp.correo.yahoo.es',
+ 'yahoo.fr' => 'smtp.mail.yahoo.fr',
+ 'yahoo.ie' => 'smtp.mail.yahoo.co.uk',
+ 'yahoo.it' => 'smtp.mail.yahoo.it',
+ 'zoho.com' => 'smtp.zoho.com',
+ // from http://www.att.com/esupport/article.jsp?sid=KB401570&cv=801
+ 'ameritech.net' => 'outbound.att.net',
+ 'att.net' => 'outbound.att.net',
+ 'bellsouth.net' => 'outbound.att.net',
+ 'flash.net' => 'outbound.att.net',
+ 'nvbell.net' => 'outbound.att.net',
+ 'pacbell.net' => 'outbound.att.net',
+ 'prodigy.net' => 'outbound.att.net',
+ 'sbcglobal.net' => 'outbound.att.net',
+ 'snet.net' => 'outbound.att.net',
+ 'swbell.net' => 'outbound.att.net',
+ 'wans.net' => 'outbound.att.net'
+ );
+ // if an email's mx is in this domain array, it is a known smtp server (dns lookup)
+ // useful for custom domains that map to a mail service
+ private static $mxMappings = array (
+ '1and1help.com' => 'smtp.1and1.com',
+ 'google.com' => 'smtp.gmail.com',
+ 'Gmx.net' => 'mail.gmx.com',
+ 'icloud.com' => 'smtp.mail.me.com',
+ 'hotmail.com' => 'smtp.live.com',
+ 'mx-eu.mail.am0.yahoodns.net' => 'smtp.mail.yahoo.com',
+ // 'mail.protection.outlook.com' => 'smtp.office365.com',
+ // 'mail.eo.outlook.com' => 'smtp.office365.com',
+ 'outlook.com' => 'smtp.office365.com',
+ 'biz.mail.am0.yahoodns.net' => 'smtp.bizmail.yahoo.com',
+ 'BIZ.MAIL.YAHOO.com' => 'smtp.bizmail.yahoo.com',
+ 'hushmail.com' => 'smtp.hushmail.com',
+ 'gmx.net' => 'mail.gmx.com',
+ 'mandrillapp.com' => 'smtp.mandrillapp.com',
+ 'smtp.secureserver.net' => 'relay-hosting.secureserver.net',
+ 'presmtp.ex1.secureserver.net' => 'smtp.ex1.secureserver.net',
+ 'presmtp.ex2.secureserver.net' => 'smtp.ex2.secureserver.net',
+ 'presmtp.ex3.secureserver.net' => 'smtp.ex2.secureserver.net',
+ 'presmtp.ex4.secureserver.net' => 'smtp.ex2.secureserver.net',
+ 'htvhosting.com' => 'mail.htvhosting.com'
+ );
+ public static function getSmtpFromEmail($hostname) {
+ reset ( PostmanSmtpMappings::$emailDomain );
+ foreach ( PostmanSmtpMappings::$emailDomain as $domain => $smtp ) {
+ if (strcasecmp ( $hostname, $domain ) == 0) {
+ return $smtp;
+ }
+ }
+ return false;
+ }
+ public static function getSmtpFromMx($mx) {
+ reset ( PostmanSmtpMappings::$mxMappings );
+ foreach ( PostmanSmtpMappings::$mxMappings as $domain => $smtp ) {
+ if (PostmanUtils::endswith ( $mx, $domain )) {
+ return $smtp;
+ }
+ }
+ return false;
+ }
+ }
+}
+if (! class_exists ( 'PostmanSmtpDiscovery' )) {
+ class PostmanSmtpDiscovery {
+
+ // private instance variables
+ public $isGoogle;
+ public $isGoDaddy;
+ public $isWellKnownDomain;
+ private $smtpServer;
+ private $primaryMx;
+ private $email;
+ private $domain;
+
+ /**
+ * Constructor
+ *
+ * @param mixed $email
+ */
+ public function __construct($email) {
+ $this->email = $email;
+ $this->determineSmtpServer ( $email );
+ $this->isGoogle = $this->smtpServer == 'smtp.gmail.com';
+ $this->isGoDaddy = $this->smtpServer == 'relay-hosting.secureserver.net';
+ }
+ /**
+ * The SMTP server we suggest to use - this is determined
+ * by looking up the MX hosts for the domain.
+ */
+ public function getSmtpServer() {
+ return $this->smtpServer;
+ }
+ public function getPrimaryMx() {
+ return $this->primaryMx;
+ }
+ /**
+ *
+ * @param mixed $email
+ * @return string|bool
+ */
+ private function validateEmail($email) {
+ return PostmanUtils::validateEmail ( $email );
+ }
+ private function determineSmtpServer($email) {
+ $hostname = substr ( strrchr ( $email, "@" ), 1 );
+ $this->domain = $hostname;
+ $smtp = PostmanSmtpMappings::getSmtpFromEmail ( $hostname );
+ if ($smtp) {
+ $this->smtpServer = $smtp;
+ $this->isWellKnownDomain = true;
+ return true;
+ } else {
+ $host = strtolower ( $this->findMxHostViaDns ( $hostname ) );
+ if ($host) {
+ $this->primaryMx = $host;
+ $smtp = PostmanSmtpMappings::getSmtpFromMx ( $host );
+ if ($smtp) {
+ $this->smtpServer = $smtp;
+ return true;
+ } else {
+ return false;
+ }
+ } else {
+ return false;
+ }
+ }
+ }
+
+ /**
+ * Uses getmxrr to retrieve the MX records of a hostname
+ *
+ * @param mixed $hostname
+ * @return mixed|boolean
+ */
+ private function findMxHostViaDns($hostname) {
+ if (function_exists ( 'getmxrr' )) {
+ $b_mx_avail = getmxrr ( $hostname, $mx_records, $mx_weight );
+ } else {
+ $b_mx_avail = $this->getmxrr ( $hostname, $mx_records, $mx_weight );
+ }
+ if ($b_mx_avail && sizeof ( $mx_records ) > 0) {
+ // copy mx records and weight into array $mxs
+ $mxs = array ();
+
+ for($i = 0; $i < count ( $mx_records ); $i ++) {
+ $mxs [$mx_weight [$i]] = $mx_records [$i];
+ }
+
+ // sort array mxs to get servers with highest prio
+ ksort ( $mxs, SORT_NUMERIC );
+ reset ( $mxs );
+ $mxs_vals = array_values ( $mxs );
+ return array_shift ( $mxs_vals );
+ } else {
+ return false;
+ }
+ }
+ /**
+ * This is a custom implementation of mxrr for Windows PHP installations
+ * which don't have this method natively.
+ *
+ * @param mixed $hostname
+ * @param mixed $mxhosts
+ * @param mixed $mxweight
+ * @return boolean
+ */
+ function getmxrr($hostname, &$mxhosts, &$mxweight) {
+ if (! is_array ( $mxhosts )) {
+ $mxhosts = array ();
+ }
+ $hostname = escapeshellarg ( $hostname );
+ if (! empty ( $hostname )) {
+ $output = "";
+ @exec ( "nslookup.exe -type=MX $hostname.", $output );
+ $imx = - 1;
+
+ foreach ( $output as $line ) {
+ $imx ++;
+ $parts = "";
+ if (preg_match ( "/^$hostname\tMX preference = ([0-9]+), mail exchanger = (.*)$/", $line, $parts )) {
+ $mxweight [$imx] = $parts [1];
+ $mxhosts [$imx] = $parts [2];
+ }
+ }
+ return ($imx != - 1);
+ }
+ return false;
+ }
+ }
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 11:13:09 +0000