[SunHELP] DNS reverse lookups
Lara Matthews
lara.matthews at accesscomputing.co.uk
Wed Sep 7 09:20:44 CDT 2005
Hi Tim
Tim Gallagher wrote:
> What are the results if you use nslookup in debug mode?
>
> If the mail server is a recent addition to the file, you did of course
> increment the serial number and HUP the daemon, correct?
>
Here is the output, it looks fine to me but if I try a reverse lookup
outside of my network I just get a fail.
Server: accesscomputing.co.uk
Address: 213.128.229.177
;; res_nmkquery(QUERY, 179.229.128.213.in-addr.arpa, IN, PTR)
------------
Got answer:
HEADER:
opcode = QUERY, id = 62901, rcode = NOERROR
header flags: response, auth. answer, want recursion,
recursion avail.
questions = 1, answers = 1, authority records = 1,
additional = 1
QUESTIONS:
179.229.128.213.in-addr.arpa, type = PTR, class = IN
ANSWERS:
-> 179.229.128.213.in-addr.arpa
name = mailhost.accesscomputing.co.uk
ttl = 86400 (1D)
AUTHORITY RECORDS:
-> 229.128.213.in-addr.arpa
nameserver = ns.accesscomputing.co.uk
ttl = 86400 (1D)
ADDITIONAL RECORDS:
-> ns.accesscomputing.co.uk
internet address = 213.128.229.177
ttl = 86400 (1D)
------------
Name: mailhost.accesscomputing.co.uk
Address: 213.128.229.179
Yes incremented number and HUP'd service. I remembered - just.
Thanks
Lara
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