On Jun 10, 2012, at 16:23, Paul Vixie wrote: > On 2012-06-10 12:59 PM, Patrick W. Gilmore wrote: >>>> A single ANY query for a domain gives you the NS, MX, TXT and SPF records, >>>> plus any A/AAAA record present. At scale, who knows, the reduction in >>>> number of queries probably adds up. >>> >>> It strikes me as laziness and cost-shifting. >> >> If you need to do multiple queries (e.g. TXT & MX), is it better for either >> side to do two queries instead of one? > > yes, since the queries can be transmitted simultaneously, and there's way > less risk of TC=1 and followup TCP.
Interesting, I did not know that. Does that mean that even from the perspective of a SMTP server, which may need between three and five queries, it may be more efficient to do seperate queries instead of a single, large ANY query? Cya, Jona _______________________________________________ dns-operations mailing list dns-operations@lists.dns-oarc.net https://lists.dns-oarc.net/mailman/listinfo/dns-operations dns-jobs mailing list https://lists.dns-oarc.net/mailman/listinfo/dns-jobs
