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Re: stupid SMTP rejection of spammers

2001-06-15 12:59:09

On Fri, 15 Jun 2001, Rolf E. Sonneveld wrote:

: > > (1) Don't block empty envelope from:
: > > (2) Don't say ok to a recipient address if you are not 100% sure you can 
: > > local delivery.

: (3) don't reject mail if you are listed as MX host
: (4) always support postmaster(_at_)domain, for all domains for which you send 
mail to
: the Internet.

One interesting thing to note is that there's already a blackhole project
intended to combat some of this:  it allows a MTA to autobounce mail from
RFC-ignorant domains (that is, domains for which the MXs violate either 1 or
4 above).  The list is arranged as a *domain*-based (not IP-based) DNS zone.


-- Todd Vierling (tv(_at_)pobox(_dot_)com)