[Web] DNS check: only look for v=dkim1, k=rsa and p=key

data/web/inc/ajax/dns_diagnostics.php

@@ -368,8 +368,9 @@ foreach ($records as $record) {
     elseif ($current['type'] == 'TXT' &&
       stripos($current['txt'], 'v=dkim') === 0 &&
       stripos($record[2], 'v=dkim') === 0) {
-        $current['txt'] = str_replace(' ', '', $current['txt']);
-        if ($current[$data_field[$current['type']]] == $record[2]) {
+        preg_match('/v=DKIM1;.*k=rsa;.*p=(.*)/i', $current[$data_field[$current['type']]], $dkim_matches_current);
+        preg_match('/v=DKIM1;.*k=rsa;.*p=(.*)/i', $record[2], $dkim_matches_good);
+        if ($dkim_matches_current[1] == $dkim_matches_good[1]) {
           $state = state_good;
         }
     }