OSEC

Neohapsis is currently accepting applications for employment. For more information, please visit our website www.neohapsis.com or email hr@neohapsis.com
 
Re: Greylisting and whitelists for bad mailers???

From: Jason Fesler (jfeslergigo.com)
Date: Tue Jun 01 2004 - 18:18:10 CDT


> In http://spf.pobox.com/objections.html in the section it says "Yahoo Groups
> does not respect transient failure errors --- it treats them as permanent." I
> don't know if this was ever true or still is, but that's another site you
> should check.

It is definately true.

Also, ebay's retry times seem to be about *4h*.

I have also noticed that the SMS gateways for various cell providers don't
bother retrying, either.

Greylisting is powerful, but I suggest setting it up initially in such a
way as to not reject anything at first - see postfix's "warn_if_reject"
command.