+ // @see https://github.com/friendica/friendica/issues/9142
+ $countMessageId = 0;
+ foreach ($email->getAdditionalMailHeader() as $name => $value) {
+ if (strtolower($name) == 'message-id') {
+ $countMessageId += count($value);
+ }
+ }
+ if ($countMessageId > 0) {
+ $this->logger->warning('More than one Message-ID found - RFC violation', ['email' => $email]);
+ }
+