[Asrg] On assertions

[Alessandro Vesely]

der Mouse wrote:
>>> I thought one indicated "we receive no mail" by establishing a valid
>>> MX record that points to a machine with the smtp port open and a
>>> silly little daemon that gives 552 errors in reply to all MAIL FROM
>>> commands listening on it.  (would that be a viable commercial
>>> service?)
>> Depends.  I know of some domains that get several thousand connection
>> attempts per second, all spam, when they have an MX.  How much
>> bandwidth does your daemon have and how many simultaneous connections
>> will it handle?
> 
> Several thousand connections per second, at (say) 100 bytes of traffic
> each (banner, HELO/EHLO, response, MAIL, response, QUIT, response - if
> the responses are short, I don't think 100 bytes total is far off)?
> 
> Several hundred thousand bytes per second.  Not over a 10Mbit pipe's
> capacity, though approaching it (perhaps even a little over it, given
> the various layers' overhead).  Lots of hosting centres can do a 10Mbit
> pipe no problem.

There is something basically wrong in trying to achieve efficiency 
when serving spammers, IMHO.

> Simultaneous connections?  After doing the mail shim for work, I
> believe I could build an SMTP daemon which does that;

What about http://www.spamcannibal.org/?