On Mon, 05 Jan 2004 00:10:21 EST, Hector Santos said:
In regards to RFC2821, section 5, saying:
There seems to be a conflict between this and the following itemized rule in
RFC1123:
The world has moved on since 1123 was written. I don't think in October 1989,
*ANYBODY* had the sort of mail infrastructure where multiple MXs and multiple As
were in use to load-balance. It was strictly "One MX with one A record for our
on-site server, and another MX pointing to a single A record offsite". I
remember
at that time, Marc Crispin was an oddity because he had 4 MX's defined, all on
separate continents...
http://www.isc.org/ds/host-count-history.html says that October 1989, there
were 159,000 hosts. Total. That's only 5 times what *my site* has today.
But what do I know? I once helped multihome a machine on Bitnet and Arpanet/
Milnet, and Bitnet was the larger network at the time.. ;)
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