[Cumbria] Which of you nice chaps is at bnfl?
Paul Broomfield
cumbria at mailman.lug.org.uk
Tue Apr 15 12:48:01 2003
I have no problems getting MX records from those servers. Though not
dishing the MX records doesn't seem to be the problem. All my name
servers are fine. I think that there could be a routing problem between
my net and other nets I am just trying to find 1 ip that I can ping
outside of the 62.69.78.0/23 subnet but not inside.
Paul Broomfield
[root@seventeen qmail]# dig wrax.co.uk mx @217.158.176.254
; <<>> DiG 8.3 <<>> wrax.co.uk mx @217.158.176.254
; (1 server found)
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 3, ADDITIONAL: 5
;; QUERY SECTION:
;; wrax.co.uk, type = MX, class = IN
;; ANSWER SECTION:
wrax.co.uk. 10h40m IN MX 10 mail7.wrax.co.uk.
wrax.co.uk. 10h40m IN MX 20 mail8.wrax.co.uk.
wrax.co.uk. 10h40m IN MX 30 mail13.wrax.co.uk.
wrax.co.uk. 10h40m IN MX 40 london.wrax.net.uk.
;; AUTHORITY SECTION:
wrax.co.uk. 10h40m IN NS third.wrx.co.uk.
wrax.co.uk. 10h40m IN NS one.wrax.co.uk.
wrax.co.uk. 10h40m IN NS half.wrax.co.uk.
;; ADDITIONAL SECTION:
mail7.wrax.co.uk. 10h40m IN A 62.69.78.7
mail8.wrax.co.uk. 10h40m IN A 62.69.78.8
mail13.wrax.co.uk. 10h40m IN A 62.69.78.13
one.wrax.co.uk. 10h40m IN A 62.69.78.1
half.wrax.co.uk. 10h40m IN A 62.39.78.10
;; Total query time: 24 msec
;; FROM: seventeen.wrax.co.uk to SERVER: 217.158.176.254
217.158.176.254
;; WHEN: Tue Apr 15 12:43:29 2003
;; MSG SIZE sent: 28 rcvd: 268
[root@seventeen qmail]# dig wrax.co.uk mx @217.134.219.27
; <<>> DiG 8.3 <<>> wrax.co.uk mx @217.134.219.27
; (1 server found)
;; res options: init recurs defnam dnsrch
;; res_nsend to server 217.134.219.27 217.134.219.27: Connection timed
out
[root@seventeen qmail]#
>-----Original Message-----
>From: cumbria-admin@mailman.lug.org.uk
>[mailto:cumbria-admin@mailman.lug.org.uk] On Behalf Of Luke Antins
>Sent: 15 April 2003 12:37
>To: cumbria@mailman.lug.org.uk
>Subject: RE: [Cumbria] Which of you nice chaps is at bnfl?
>
>
>Ok, at home: 217.134.219.27
>
>And then take your pick from any box in this ip range
>217.158.176.0 - 255. (dns server is running on 217.158.176.254)
>
>--
>Kind Regards
>Luke Antins
>
>On Tue, 15 Apr 2003, Paul Broomfield wrote:
>
>> Please can you give me the ip of a box where it does not work from?
>>
>> >-----Original Message-----
>> >From: cumbria-admin@mailman.lug.org.uk
>> >[mailto:cumbria-admin@mailman.lug.org.uk] On Behalf Of Luke Antins
>> >Sent: 15 April 2003 12:20
>> >To: cumbria@mailman.lug.org.uk
>> >Subject: Re: [Cumbria] Which of you nice chaps is at bnfl?
>> >
>> >
>> >Yep, looks like you may have a problem with DNS.
>> >
>> >I done a dig from home and got this in the answer section:
>> >wrax.co.uk. 34048 IN A 62.69.78.1
>> >wrax.co.uk. 37444 IN NS one.wrax.co.uk.
>> >wrax.co.uk. 37444 IN NS half.wrax.co.uk.
>> >
>> >As you can see no MX records.
>> >
>> >However I took a look from one of my boxen that is down in
>London and
>> >got
>> >this:
>> >wrax.co.uk. 9h26m44s IN NS one.wrax.co.uk.
>> >wrax.co.uk. 9h26m44s IN NS half.wrax.co.uk.
>> >wrax.co.uk. 9h26m44s IN A 62.69.78.1
>> >wrax.co.uk. 10h38m25s IN MX 10 mail7.wrax.co.uk.
>> >wrax.co.uk. 10h38m25s IN MX 20 mail8.wrax.co.uk.
>> >wrax.co.uk. 10h38m25s IN MX 30 mail13.wrax.co.uk.
>> >wrax.co.uk. 10h38m25s IN MX 40 london.wrax.net.uk.
>> >
>> >Whoo! MX records! (that happened to be from my mail server).
>> >
>> >Done it from another boxen down London and got this the same as the
>> >first one.
>> >
>> >So your problem looks like a DNS one.
>> >
>> >I could not get an answer from half.wrax.co.uk but I can
>get one from
>> >one.wrax.co.uk (and get the correct information).
>> >
>> >I'd take a look at your DNS servers and make sure they have the
>> >correct information in the zones and make sure your slave
>DNS server
>> >is slaving correctly.
>> >
>> >BNFL's mail server has probably got a reply from a DNS server with
>> >the incorrect zone information (IE no MX records).
>> >
>> >Fix it up, get em to flush there DNS cache (if the run
>there own DNS
>> >servers that is) and it should work fine.
>> >
>> >Ah well, hope my blabbing helps.
>> >
>> >--
>> >Kind Regards
>> >Luke Antins
>> >
>> >_______________________________________________
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>> >Cumbria@mailman.lug.org.uk
>> >http://mailman.lug.org.uk/mailman/listinfo/cumbria
>> >
>>
>>
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