我的本地环境可以发送邮件，linux上不行
代码是
<?php
class smtp
{
/* Public Variables */
public $smtp_port;
public $time_out;
public $host_name;
public $log_file;
public $relay_host;
public $debug;
public $auth;
public $user;
public $pass;
/* Private Variables */
private $sock;
/* Constractor */
function smtp($relay_host = "", $smtp_port = 25, $auth = false, $user, $pass)
{
$this->debug = FALSE;
$this->smtp_port = $smtp_port;
$this->relay_host = $relay_host;
$this->time_out = 30; //is used in fsockopen()
#
$this->auth = $auth;//auth
$this->user = $user;
$this->pass = $pass;
#
$this->host_name = "localhost"; //is used in HELO command
$this->log_file = "";
$this->sock = FALSE;
}
/* Main Function */
function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")
{
$mail_from = $this->get_address($this->strip_comment($from));
$body = preg_replace("/(^|(\r\n))(\\.)/", "\\1.\\3", $body);
$header = "MIME-Version:1.0\r\n";
if ($mailtype == "HTML") {
$header .= "Content-Type:text/html\r\n";
}
$header .= "To: " . $to . "\r\n";
if ($cc != "") {
$header .= "Cc: " . $cc . "\r\n";
}
$header .= "From: $from<" . $from . ">\r\n";
$header .= "Subject: " . $subject . "\r\n";
$header .= $additional_headers;
$header .= "Date: " . date("r") . "\r\n";
$header .= "X-Mailer:By Redhat (PHP/" . phpversion() . ")\r\n";
list($msec, $sec) = explode(" ", microtime());
$header .= "Message-ID: <" . date("YmdHis", $sec) . "." . ($msec * 1000000) . "." . $mail_from . ">\r\n";
$TO = explode(",", $this->strip_comment($to));
if ($cc != "") {
$TO = array_merge($TO, explode(",", $this->strip_comment($cc)));
}
if ($bcc != "") {
$TO = array_merge($TO, explode(",", $this->strip_comment($bcc)));
}
$sent = TRUE;
foreach ($TO as $rcpt_to) {
$rcpt_to = $this->get_address($rcpt_to);
if (!$this->smtp_sockopen($rcpt_to)) {
$this->log_write("Error: Cannot send email to " . $rcpt_to . "\n");
$sent = FALSE;
continue;
}
if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) {
$this->log_write("E-mail has been sent to <" . $rcpt_to . ">\n");
} else {
$this->log_write("Error: Cannot send email to <" . $rcpt_to . ">\n");
$sent = FALSE;
}
fclose($this->sock);
$this->log_write("Disconnected from remote host\n");
}
echo "<br>";
echo $header;
return $sent;
}
/* Private Functions */
function smtp_send($helo, $from, $to, $header, $body = "")
{
if (!$this->smtp_putcmd("HELO", $helo)) {
return $this->smtp_error("sending HELO command");
}
#auth
if ($this->auth) {
if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) {
return $this->smtp_error("sending HELO command");
}
if (!$this->smtp_putcmd("", base64_encode($this->pass))) {
return $this->smtp_error("sending HELO command");
}
}
#
if (!$this->smtp_putcmd("MAIL", "FROM:<" . $from . ">")) {
return $this->smtp_error("sending MAIL FROM command");
}
if (!$this->smtp_putcmd("RCPT", "TO:<" . $to . ">")) {
return $this->smtp_error("sending RCPT TO command");
}
if (!$this->smtp_putcmd("DATA")) {
return $this->smtp_error("sending DATA command");
}
if (!$this->smtp_message($header, $body)) {
return $this->smtp_error("sending message");
}
if (!$this->smtp_eom()) {
return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");
}
if (!$this->smtp_putcmd("QUIT")) {
return $this->smtp_error("sending QUIT command");
}
return TRUE;
}
function smtp_sockopen($address)
{
if ($this->relay_host == "") {
return $this->smtp_sockopen_mx($address);
} else {
return $this->smtp_sockopen_relay();
}
}
function smtp_sockopen_relay()
{
$this->log_write("Trying to " . $this->relay_host . ":" . $this->smtp_port . "\n");
$this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);
if (!($this->sock && $this->smtp_ok())) {
$this->log_write("Error: Cannot connenct to relay host " . $this->relay_host . "\n");
$this->log_write("Error: " . $errstr . " (" . $errno . ")\n");
return FALSE;
}
$this->log_write("Connected to relay host " . $this->relay_host . "\n");
return TRUE;
}
function smtp_sockopen_mx($address)
{
$domain = preg_replace("/^.+@([^@]+)$/", "\\1", $address);
if (!@getmxrr($domain, $MXHOSTS)) {
$this->log_write("Error: Cannot resolve MX \"" . $domain . "\"\n");
return FALSE;
}
foreach ($MXHOSTS as $host) {
$this->log_write("Trying to " . $host . ":" . $this->smtp_port . "\n");
$this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);
if (!($this->sock && $this->smtp_ok())) {
$this->log_write("Warning: Cannot connect to mx host " . $host . "\n");
$this->log_write("Error: " . $errstr . " (" . $errno . ")\n");
continue;
}
$this->log_write("Connected to mx host " . $host . "\n");
return TRUE;
}
$this->log_write("Error: Cannot connect to any mx hosts (" . implode(", ", $MXHOSTS) . ")\n");
return FALSE;
}
function smtp_message($header, $body)
{
fputs($this->sock, $header . "\r\n" . $body);
$this->smtp_debug("> " . str_replace("\r\n", "\n" . "> ", $header . "\n> " . $body . "\n> "));
return TRUE;
}
function smtp_eom()
{
fputs($this->sock, "\r\n.\r\n");
$this->smtp_debug(". [EOM]\n");
return $this->smtp_ok();
}
function smtp_ok()
{
$response = str_replace("\r\n", "", fgets($this->sock, 512));
$this->smtp_debug($response . "\n");
if (!preg_match("/^[23]/", $response)) {
fputs($this->sock, "QUIT\r\n");
fgets($this->sock, 512);
$this->log_write("Error: Remote host returned \"" . $response . "\"\n");
return FALSE;
}
return TRUE;
}
function smtp_putcmd($cmd, $arg = "")
{
if ($arg != "") {
if ($cmd == "") $cmd = $arg;
else $cmd = $cmd . " " . $arg;
}
fputs($this->sock, $cmd . "\r\n");
$this->smtp_debug("> " . $cmd . "\n");
return $this->smtp_ok();
}
function smtp_error($string)
{
$this->log_write("Error: Error occurred while " . $string . ".\n");
return FALSE;
}
function log_write($message)
{
$this->smtp_debug($message);
if ($this->log_file == "") {
return TRUE;
}
$message = date("M d H:i:s ") . get_current_user() . "[" . getmypid() . "]: " . $message;
if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a"))) {
$this->smtp_debug("Warning: Cannot open log file \"" . $this->log_file . "\"\n");
return FALSE;
}
flock($fp, LOCK_EX);
fputs($fp, $message);
fclose($fp);
return TRUE;
}
function strip_comment($address)
{
$comment = "/\\([^()]*\\)/";
while (preg_match($comment, $address)) {
$address = preg_replace($comment, "", $address);
}
return $address;
}
function get_address($address)
{
$address = preg_replace("/([ \t\r\n])+/", "", $address);
$address = preg_replace("/^.*<(.+)>.*$/", "\\1", $address);
return $address;
}
function smtp_debug($message)
{
if ($this->debug) {
echo $message . "<br>";
}
}
function get_attach_type($image_tag)
{ //
$filedata = array();
$img_file_con = fopen($image_tag, "r");
unset($image_data);
while ($tem_buffer = AddSlashes(fread($img_file_con, filesize($image_tag))))
$image_data = $tem_buffer;
fclose($img_file_con);
$filedata['context'] = $image_data;
$filedata['filename'] = basename($image_tag);
$extension = substr($image_tag, strrpos($image_tag, "."), strlen($image_tag) - strrpos($image_tag, "."));
switch ($extension) {
case ".gif":
$filedata['type'] = "image/gif";
break;
case ".gz":
$filedata['type'] = "application/x-gzip";
break;
case ".htm":
$filedata['type'] = "text/html";
break;
case ".html":
$filedata['type'] = "text/html";
break;
case ".jpg":
$filedata['type'] = "image/jpeg";
break;
case ".tar":
$filedata['type'] = "application/x-tar";
break;
case ".txt":
$filedata['type'] = "text/plain";
break;
case ".zip":
$filedata['type'] = "application/zip";
break;
default:
$filedata['type'] = "application/octet-stream";
break;
}
return $filedata;
}
} // end cla
$smtpserver = "smtp.163.com";//SMTP服务器
$smtpserverport = 25;//SMTP服务器端口
$smtpusermail = "xxx163.com";//SMTP服务器的用户邮箱
$smtpemailto = "xxx@qq.com";//发送给谁
$smtpuser = "xxx@163.com";//SMTP服务器的用户帐号
$smtppass = "xxx";//SMTP服务器的用户密码
$mailsubject = "PHP测试邮件系统";//邮件主题
$mailbody = "<h1> 这是一个测试程序</h1>";//邮件内容
$mailtype = "HTML";//邮件格式（HTML/TXT）,TXT为文本邮件
##########################################
$smtp = new smtp($smtpserver, $smtpserverport, true, $smtpuser, $smtppass);//这里面的一个true是表示使用身份验证,否则不使用身份验证.
$smtp->debug = true;//是否显示发送的调试信息
$smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype);
错误提示是
Error: Cannot connenct to relay host smtp.163.com
查了网上说的
a.找到PHP.ini，查看两个地方，一个是allow_url_fopen，这个地方要设置成on；另一个地方是查disable_functions，如果后面出现了fsock,fsockopen，则需要把这两个函数去掉，重启apache，然后就可以正常发送邮件了。
都是正常的。
