nanog mailing list archives

Re: Selection of Appropriate Local SMTP Relay


From: jlewis () lewis org
Date: Wed, 12 Jan 2000 00:25:48 -0500 (EST)


On 11 Jan 2000, Michael Shields wrote:

Specifically, if you have a set of well known IP addresses for common
services, thus something like:

223.255.255.1 - Primary DNS
223.255.255.2 - Secondary DNS
223.255.255.3 - SMTP Mail
223.255.255.4 - Time Server

Why did you choose to have exactly 2 DNS servers and exactly 1 SMTP
and "time" server?

This seems a big drawback to the standard IP number method.  Think about a
network sharing an IGP containing thousands of dialup ports.  That's where
I am.  How many dialup ports can you have before one SMTP gateway just
doesn't cut it?  Sure you can play games with load balancing, layer 4
switches, or perhaps route filtering but why force money or effort to be
wasted on such things?

----------------------------------------------------------------------
 Jon Lewis *jlewis () lewis org*|  Spammers will be winnuked or 
 System Administrator        |  nestea'd...whatever it takes
 Atlantic Net                |  to get the job done.
_________http://www.lewis.org/~jlewis/pgp for PGP public key__________





Current thread: