In my postfix mail log I see a lot of unknown against servers.
I know DNS works as SPF records lookup properly. Is this normal behavour due to timeouts? Just when I always see unknown makes me wonder. Thanks,
In my postfix mail log I see a lot of unknown against servers.
I know DNS works as SPF records lookup properly. Is this normal behavour due to timeouts? Just when I always see unknown makes me wonder. Thanks,