[Leica] Palo Alto Control, we have a possible solution and an alternative

[leica at screengang.com (Didier Ludwig)]

Jeff

It's true greylisting may delay some mails sometimes, which can be annoying 
especially when you expect an order confirm of an online transaction or 
similar. I often whitelist such a domain before I order (takes me a few 
seconds). On the other side, as developer/programmer, I spent lots of 
overtime to keep all online forms and eshop mail confirm scrips and alike 
updated for greylisting. 

But I think for a list server like the LUG greylisting might make sense, as 
the LUG members mail adresses could be whitelisted easily.

I did not understand Brian well if the spam goes to "lug@leica-users.org" 
(which could easily be killed with greylisting), or if these spam attacks 
were attempts to hijack the mailserver as sender of spam (where gerylisting 
wouldn't help). But I believe it's the first as he said 

>"(By 'avalanche' I mean 30,000 spams arriving in a 45-minute period)."

Didier



>greylisting (where email from someone who
>hasn't yet successfully gotten mail through is rejected "try again
>later", on the theory that real MTAs do this properly but inject-and-run
>spam senders don't; this seems pretty effective, but leads to unexpected
>delays, generally right when I'm waiting for that vendor web-account
>password reminder or confirmation email).
> -Jeff