56 lines
1.9 KiB
PHP
56 lines
1.9 KiB
PHP
<?php
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/**
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* This uses the SMTP class alone to check that a connection can be made to an SMTP server,
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* authenticate, then disconnect
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*/
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//SMTP needs accurate times, and the PHP time zone MUST be set
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//This should be done in your php.ini, but this is how to do it if you don't have access to that
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date_default_timezone_set('Etc/UTC');
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require '../PHPMailerAutoload.php';
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//Create a new SMTP instance
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$smtp = new SMTP;
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//Enable connection-level debug output
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$smtp->do_debug = SMTP::DEBUG_CONNECTION;
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try {
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//Connect to an SMTP server
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if (!$smtp->connect('mail.example.com', 25)) {
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throw new Exception('Connect failed');
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}
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//Say hello
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if (!$smtp->hello(gethostname())) {
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throw new Exception('EHLO failed: ' . $smtp->getError()['error']);
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}
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//Get the list of ESMTP services the server offers
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$e = $smtp->getServerExtList();
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//If server can do TLS encryption, use it
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if (array_key_exists('STARTTLS', $e)) {
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$tlsok = $smtp->startTLS();
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if (!$tlsok) {
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throw new Exception('Failed to start encryption: ' . $smtp->getError()['error']);
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}
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//Repeat EHLO after STARTTLS
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if (!$smtp->hello(gethostname())) {
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throw new Exception('EHLO (2) failed: ' . $smtp->getError()['error']);
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}
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//Get new capabilities list, which will usually now include AUTH if it didn't before
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$e = $smtp->getServerExtList();
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}
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//If server supports authentication, do it (even if no encryption)
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if (array_key_exists('AUTH', $e)) {
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if ($smtp->authenticate('username', 'password')) {
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echo "Connected ok!";
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} else {
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throw new Exception('Authentication failed: ' . $smtp->getError()['error']);
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}
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}
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} catch (Exception $e) {
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echo 'SMTP error: ' . $e->getMessage(), "\n";
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}
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//Whatever happened, close the connection.
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$smtp->quit(true);
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