让Discuz！支持starttls发送邮件

fuction_mail.php

<?php
		//在131行处添加
		if ($_G['setting']['mail']['port'] == '587'){
			//Need to start TLS
			fputs($fp, "STARTTLS\r\n");
			$lastmessage = fgets($fp, 512);
			if(substr($lastmessage, 0, 3) != 220) {
				fputs($fp, "QUIT\r\n");
				runlog('SMTP', "({$_G['setting']['mail']['server']}:{$_G['setting']['mail']['port']}) STARTTLS - $lastmessage", 0);
				return false;
			}
			if (function_exists('stream_socket_enable_crypto')) {
				stream_socket_enable_crypto($fp, true, STREAM_CRYPTO_METHOD_TLS_CLIENT);
			}
			fputs($fp, ($_G['setting']['mail']['auth'] ? 'EHLO' : 'HELO')." $host\r\n");
			
			$lastmessage = fgets($fp, 512);
			if(substr($lastmessage, 0, 3) != 220 && substr($lastmessage, 0, 3) != 250) {
				fputs($fp, "QUIT\r\n");
				runlog('SMTP', "({$_G['setting']['mail']['server']}:{$_G['setting']['mail']['port']}) HELO/EHLO - $lastmessage", 0);
				return false;
			}
	
			while(1) {
				if(substr($lastmessage, 3, 1) != '-' || empty($lastmessage)) {
					break;
				}
				$lastmessage = fgets($fp, 512);
			}
		}
?>