Re: Alternative to TXT or new RR

Bill Mcinnis writes:
> I have not had a chance to read this list for a week or so, and have 
> not been able to trace this thread with any ease, can someone 
> summarize what started this thread, because I am reading a lot of 
> bits and pieces that sound like what we have.
SPF is like this: The message recipient figures out a sending domain, 
does a DNS lookup, receives an SPF program, interprets that program, 
and finally makes a decision. CID is much the same.
I suggested an alternative: The message recipient figures out a sending 
domain, does a DNS lookup, receives the location of a server, asks that 
server whether a message from IP address so-and-so is permitted to have 
sender so-and-so, receives an answer, and makes a decision.
The advantages: 1) that there is no longer an entire language in the 
MARID spec, 2) there is absolutely no need for a new RR, 3) programs 
aren't being shipped around the net to be executed by sundry mail 
receivers, 4) the domain owner (or software vendor) can do any 
processing they want, and 5) mail receivers don't need to accept and 
execute programs from strangers.
One disadvantage has been mentioned: It's harder to set up such a 
service than to add the SPF TXT record.
Arnt