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";} # Check syntax with regex if (preg_match('/^([a-zA-Z0-9\._\+-]+)\@((\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,7}|[0-9]{1,3})(\]?))$/', $email, $matches)) { $user = $matches[1]; $domain = $matches[2]; # Check availability of DNS MX records if ($domainCheck && function_exists('checkdnsrr')) { # Construct array of available mailservers if(getmxrr($domain, $mxhosts, $mxweight)) { for($i=0;$i 0 && $verify) { # Check if mailers accept mail for($n=0; $n < $total; $n++) { # Check if socket can be opened if($debug) { echo "Checking server $mailers[$n]...\n";} $connect_timeout = 2; $errno = 0; $errstr = 0; $probe_address = 'noreply@combivision.nl'; $helo_address = 'server.vks-ict.com'; # Try to open up socket if($sock = @fsockopen($mailers[$n], 25, $errno , $errstr, $connect_timeout)) { $response = fgets($sock); if($debug) {echo "Opening up socket to $mailers[$n]... Succes!\n";} stream_set_timeout($sock, 5); $meta = stream_get_meta_data($sock); if($debug) { echo "$mailers[$n] replied: $response\n";} $cmds = array( "HELO $helo_address", # Be sure to set this correctly! "MAIL FROM: <$probe_address>", "RCPT TO: <$email>", "QUIT", ); # Hard error on connect -> break out if(!$meta['timed_out'] && !preg_match('/^2\d\d[ -]/', $response)) { $error = "Error: $mailers[$n] said: $response\n"; break; } foreach($cmds as $cmd) { $before = microtime(true); fputs($sock, "$cmd\r\n"); $response = fgets($sock, 4096); $t = 1000*(microtime(true)-$before); if($debug) {echo htmlentities("$cmd\n$response") . "(" . sprintf('%.2f', $t) . " ms)\n";} if(!$meta['timed_out'] && preg_match('/^5\d\d[ -]/', $response)) { $error = "Unverified address: $mailers[$n] said: $response"; break 2; } } fclose($sock); if($debug) { echo "Succesful communication with $mailers[$n], no hard errors, assuming OK";} break; } elseif($n == $total-1) { $error = "None of the mailservers listed for $domain could be contacted"; } } } elseif($total <= 0) { $error = "No usable DNS records found for domain '$domain'"; } } } else { $error = 'Address syntax not correct'; } if($debug) { echo "";} #echo ""; if($return_errors) { # Give back details about the error(s). # Return FALSE if there are no errors. # Keep this in mind when using it like: # if(checkEmail($addr)) { # Because of this strange behaviour this # is not default ;-) if(isset($error)) return htmlentities($error); else return false; } else { # 'Old' behaviour, simple to understand if(isset($error)) return false; else return true; } } ?> Van Ooijen Reclame & Advies

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