Re: DNS Issue with proofpoint.com

[bmanning () vacation karoshi com]

On Wed, Apr 16, 2014 at 10:49:24AM -0400, William Herrin wrote:
> On Wed, Apr 16, 2014 at 10:45 AM, TGLASSEY <tglassey () earthlink net> wrote:
> > Wouldn't it make sense if we created a specific mail alias for requesting
> > DNS flushes? This seems to happen statistically often enough it might be a
> > valuable service to bundle under the NANOG umbrella.
>
> What would make sense is some sort of attribute on the DNS record
> which instructed servers not to cache it for so long that mistakes
> have a lasting impact.
>
> PEBKAC,
> Bill Herrin
>
>
> -- 
> William D. Herrin ................ herrin () dirtside com  bill () herrin us
> 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
> Falls Church, VA 22042-3004


per RFC 1035:

example.com.    IN    SOA   ns.example.com. hostmaster.example.com. (
                              2003080800 ; sn = serial number
                              172800     ; ref = refresh = 2d
                              900        ; ret = update retry = 15m
                              1209600    ; ex = expiry = 2w
                              3600       ; nx = nxdomain ttl = 1h
                              )