Bob Marcan wrote:
Ed Greshko wrote:
Frank Cox wrote:
On Wed, 31 Oct 2007 12:05:11 -0500
Les Mikesell <lesmikesell@xxxxxxxxx> wrote:
You must have a real domain name to send email.
Is there any technical reason (other than "we hate spammers") why
email can't
be sent to an IP address instead of a domain name?
I know that mail sent to joeblow@xxxxxxxxxxxxxxx doesn't work, but
have never
really understood why...
It is call "fault tolerance". In general, sending to a single IP
address is
has a single point of failure. If that system is down...email doesn't
move.
When you send to company.com there is what is known as an MX record that
returns all the IP addresses that accept email for company.com and
weights
for the sending side to decided who to sent to first and failing that
second, etc.
Sending to IP addresses doesn't scale and isn't manageable.
joeblow@[123.456.789.001] does work.
Well it might with a real IP address... None of the octets would be
greater than 255 in a real one - and they don't have leading 0's.
--
Les Mikesell
lesmikesell@xxxxxxxxx
