On Mon, Apr 21, 2014 at 04:26:50PM -0400, Wietse Venema wrote:
> I'm getting tired of questions about relayhost load balancing
> or source IP address diffusion.
I understand the feeling. However, in many cases, the people who
want this are hurting themselves or hurting others:
A. Self hurt:
1. Greylisting woes: changing your source IP at random, you
never get through greylisting (like gmail and postscreen
after-220 tests before 2.11)
2. Lower volume per IP address inhibits improvement in IP
reputation (in many cases, the REAL problem is poor/no IP
reputation)
B. Others hurt:
1. Snowshoe spammers "flying under the radar" to avoid DNSBL
listings
2. Avoidance of receivers' flow control, whether spam or not
Yes, randmap & roundmap sound like interesting ideas, but are
they serving real use cases?
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