Re: All spam filters fail in comparison...
> % ... to TMDA. It's not a filter, rather
> % whitelist/blacklist based
> % challenge/response system. I
> % it on my ISP's mailserver and
> % are bombarding our phones asking us
> % install it for them (especially w/
> % SoBig.F virus making its rounds).
> This is the worst and most rude
> I do not want to have to ack your TDMA
> mails, I automatically
> block you from all my mail servers as
> soon as I receive a confirmation mail,
> and as a listmaster I've done the same
> any site were people sent TDMA-like ack
> Think mail admin sending a message and
> getting back 10,000+ TDMA messages (for
> instance monthly mailman
> password reminder), except that the
> biggest list server I admined had
> 400,000 users...
When used properly, it's very effective. This includes list subscriptions like your mailman newsletters. If you just throw it up and don't take care of it by actively (and proactively) managing your whitelist, it's useless.
Also, you'd better get used to those confirmations. Until some major, radical change is enacted with a protocol (like SMTP) to combat spam, these challenge/response systems are going to be more and more commonplace.
TMDA responds to the "return-path" header address. I personally use ezmlm to manage my lists, and the return-path header automatically removes these persons with the "ack" emails coming back to the system.
All spam filters fail in comparison...
... to TMDA. It's not a filter, rather a whitelist/blacklist based challenge/response system. I installed it on my ISP's mailserver and customers are bombarding our phones asking us to install it for them (especially w/ the SoBig.F virus making its rounds).