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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: SPF again (Re: XO Mail engineers?)
DAU> Date: Wed, 4 Aug 2004 15:46:17 -0700
DAU> From: David A. Ulevitch
DAU> SPF's use of TXT records doesn't bother me so much. It's
Perhaps some other technology would like to use TXT RRs. If
something hogs an entire RRTYPE at a given scope, it really
should have its own RRTYPE. An acceptable alternative would be
KRB5-style "_foo" entries. All IMHO.
DAU> more that people are (blindly) clamoring for it.
DAU> SpamAssassin is going to start checking SPF records.
DAU>
DAU> If I don't choose to implement SPF my DNS servers are still
I don't choose to get bounces and other headaches from joe jobs.
DAU> going to get those TXT record requests. I can't opt-out of
No, although you can return NODATA or a non-SPF TXT RR, giving
you your choice of negative or positive caching.
DAU> that. I don't look forward to getting a taste of what the
DAU> root-server operators see in their valid/invalid lookup
DAU> ratios.
DAU>
DAU> I think there are going to be some negative consequences as
DAU> more people implement SPF that will only become apparent at
DAU> a certain scale.
Perhaps. However, the current { ease of performing } + { time to
educate people re } joe jobs doesn't exactly scale well. I'd not
call SPF a cure, but I still think the sickness is worse than the
experimental treatment.
Eddy
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