[AWG] further discussions of secondlife:/// (was Re: [sldev] [VWR] summary of VWR-4021 discussion from 2008-01-08 AWGroupies meeting & general hostname issues)

Argent Stonecutter secret.argent at gmail.com
Sat Jan 12 08:34:51 PST 2008


On 2008-01-12, at 10:06, Dr Scofield wrote:
>> 3. Second alternative, do a query for either TXT or A. If you  
>> don't get TXT, use the A record for the server.
> how about, try A then TXT? isn't SMTP working that way?

* "A query for either TXT or A" is a single operation that returns  
both records, if they exist, in the same packet. There's no ordering.
* SMTP uses MX, not TXT.
* As an aside, while some broken SMTP implementations use A if they  
can't find an MX, but they are not supposed to... if there is no MX  
the mail is *supposed* to bounce.



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