[exim] exim Error retry time not reached for any host

Hi guys ,

Suddenly my mail server log start getting filled with the following errors


R=dnslookup_relay_to_domains T=remote_smtp defer (-53): retry time not
reached for any host
R=dnslookup_relay_to_domains T=remote_smtp defer (-53): retry time not
reached for any host
R=dnslookup_relay_to_domains T=remote_smtp defer (-53): retry time not
reached for any host
R=dnslookup_relay_to_domains T=remote_smtp defer (-53): retry time not
reached for any host
R=dnslookup_relay_to_domains T=remote_smtp defer (-53): retry time not
reached for any host
R=dnslookup_relay_to_domains T=remote_smtp defer (-53): retry time not
reached for any host
R=dnslookup_relay_to_domains T=remote_smtp defer (-53): retry time not
reached for any host

Is there any reason for that please advice

Thank You