i have my own mail server with IP,Host,Username,Password. So i want to make connection with my mail server for just check mail server is active or not. please suggest me tutorial. Thanks in Advance.
If you simply want to check it the mail server is active, use the fsockopen function :
$fp = fsockopen("10.0.0.1", 25, $errno, $errstr, 15);
if (!$fp) {
echo "$errstr ($errno)<br />\n";
}else{
echo "Mail Server is active";
}