/**
  * Checks if imapd is cyrus and if it supports ANNOTATEMORE extension
  *
  * @param Expressomail_Model_Account $_record Account Model
  * @return boolean true if imapd supports ANNOTATEMORE extension
  */
 protected function _checkSharedSeenSupport(Expressomail_Model_Account $_record)
 {
     // TODO: check cyrus imapd version
     // ANNOTATEMORE extension is a draft that originated the METADATA extension RFC5464, maybe we
     // should be using the later.
     $imapConfig = Tinebase_Config::getInstance()->get(Tinebase_Config::IMAP, new Tinebase_Config_Struct());
     if (Tinebase_EmailUser::IMAP_CYRUS === ucfirst(strtolower($imapConfig->backend)) && $_record->hasCapability('ANNOTATEMORE')) {
         return TRUE;
     }
     return FALSE;
 }