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295114Re: email from comcast.net is bouncing

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  • James Griffin
    Aug 31 12:18 AM
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      !-- On Fri 30.Aug'13 at 20:27:43 BST, Grant (emailgrant@...), wrote:
      > >> I grep'ed the mail logs for dnsblog and got a huge number of these:
      > >>
      > >> [postfix/postscreen] warning: psc_dnsbl_request: connect to
      > >> private/dnsblog service: No such file or directory
      > >
      > > Looks as if you've found the problem.
      > >
      > > Make sure your master.cf has an entry like:
      > >
      > > dnsblog unix - - n - 0 dnsblog
      > Thank you. I added it and restarted postfix and started to get errors
      > like these:
      > [postfix/dnsblog] warning: dnsblog_query: lookup error for DNS query
      > MASKED.list.dnswl.org: Host or domain name not found. Name service
      > error for name=MASKED.list.dnswl.org type=A: Host not found, try again
      > I did some searching and I think this was due to my use of Google's
      > DNS resolvers ( and I added my host's DNS resolver
      > first in the list and the errors seem to have stopped. Is that a good
      > config?
      > I also read a recommendation to set up a caching nameserver like
      > unbound on the same machine as postfix. Is that the right thing to
      > do?
      > Is there a way to verify that everything is working properly?
      > - Grant

      using a local DNS server has worked brilliantly for me. It's trivial to
      set up and provides excellent benefits.


      James Griffin: jmz at kontrol.kode5.net

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