Re: [exim] what is log part ? attack ?

On 09/10/15 12:30, Sławomir Dworaczek wrote:
>> 2015-10-08 00:52:14 no IP address found for host smarthost.win.pl

"no IP address found" means Exim couldn't get an answer from DNS
for a forward-lookup (A or AAAA records) of a name.

Of your two samples, I don't either for one, do for the other.
This could be a DNS issue on your network or infrastructure.
--
Cheers,
Jeremy