btb:
> hi-
>
> i've become accustomed to seeing log passages like this:
>
> >grep -iF '[142.4.19.85]:52366' mail.log
> Dec 16 09:41:09 mta1 postfix/postscreen[27678]: CONNECT from
> [142.4.19.85]:52366 to [10.3.70.6]:25
> Dec 16 09:41:15 mta1 postfix/postscreen[27678]: DNSBL rank 5 for
> [142.4.19.85]:52366
> Dec 16 09:41:15 mta1 postfix/tlsproxy[29186]: CONNECT from
The client was listed at some DNSBL. BTW, there would also have
been dnsblog logging for that IP address.
> but sometimes, the DNSBL rank seems to be absent:
>
> >grep -iF '[104.47.32.71]:33498' mail.log.1
> Dec 10 14:20:36 mta1 postfix/postscreen[32607]: CONNECT from
> [104.47.32.71]:33498 to [10.3.70.6]:25
> Dec 10 14:20:42 mta1 postfix/tlsproxy[2980]: CONNECT from
The client was not listed at some DNSBL, or the dnsblog daemon
logged a DNS lookup timeout error. Use your own DNS server, don't
share queries with other organizations.
Wietse
