Re: dnsblog and "Name service error"

2018-09-15 Thread John Fawcett
On 14/09/18 03:39, Alex wrote: > Hi, > > On Thu, Sep 13, 2018 at 7:56 PM Wietse Venema wrote: >> Alex: >>> Domain Name System (response) >>> Transaction ID: 0xded6 >>> Flags: 0x8182 Standard query response, Server failure >>> 1... = Response: Message is a response >>

Re: dnsblog and "Name service error"

2018-09-13 Thread Viktor Dukhovni
> On Sep 13, 2018, at 9:46 PM, Alex wrote: > > Is it common practice for these RBLs to just block instead of > responding with an actual error? With authoritative servers over UDP, there's no blocking, they can just drop your query and not reply. They're not blocking, just your resolver is.

Re: dnsblog and "Name service error"

2018-09-13 Thread Viktor Dukhovni
> On Sep 13, 2018, at 9:39 PM, Alex wrote: > > No, I should have mentioned that it doesn't always fail, and mailspike > (in this case) doesn't have a quota. It also fails for my registered > barracuda and other RBLs we pay for. > > It failed about a thousand times over the course of the day,

Re: dnsblog and "Name service error"

2018-09-13 Thread Alex
On Thu, Sep 13, 2018 at 6:16 PM Viktor Dukhovni wrote: > > > > > On Sep 13, 2018, at 6:11 PM, Alex wrote: > > > > Hi, I've been experiencing these weird "Name service error" problems > > for a month or so and can't figure out what's causing them. > > > > Sep 13 10:04:59 mail03 postfix/dnsblog[309

Re: dnsblog and "Name service error"

2018-09-13 Thread Alex
Hi, On Thu, Sep 13, 2018 at 7:56 PM Wietse Venema wrote: > > Alex: > > Domain Name System (response) > > Transaction ID: 0xded6 > > Flags: 0x8182 Standard query response, Server failure > > 1... = Response: Message is a response > > .000 0... = Opc

Re: dnsblog and "Name service error"

2018-09-13 Thread Wietse Venema
Alex: > Domain Name System (response) > Transaction ID: 0xded6 > Flags: 0x8182 Standard query response, Server failure > 1... = Response: Message is a response > .000 0... = Opcode: Standard query (0) > .0.. = Authoritative: Se

Re: dnsblog and "Name service error"

2018-09-13 Thread Viktor Dukhovni
> On Sep 13, 2018, at 6:11 PM, Alex wrote: > > Hi, I've been experiencing these weird "Name service error" problems > for a month or so and can't figure out what's causing them. > > Sep 13 10:04:59 mail03 postfix/dnsblog[30902]: warning: dnsblog_query: > lookup error for DNS query 25.188.223.

dnsblog and "Name service error"

2018-09-13 Thread Alex
Hi, I've been experiencing these weird "Name service error" problems for a month or so and can't figure out what's causing them. Sep 13 10:04:59 mail03 postfix/dnsblog[30902]: warning: dnsblog_query: lookup error for DNS query 25.188.223.216.b.barracudacentral.org: Host or domain name not found. N