[Mailman-Users] specific (1) LHS and (2) sender rules to frustrate spam/phishing

Rich Kulawiec rsk at gsp.org
Sat Jun 30 22:45:53 CEST 2007

On Sat, Jun 30, 2007 at 10:36:19PM +0900, Stephen J. Turnbull wrote:
> You have to be careful, though.  For several years on one of my lists
> I had a subscriber whose address was something like (I don't recall
> exactly) "nobody at not-a-real-address.somewhere.net", which was a
> perfectly valid address and at which he/she/it did receive mail and
> from which he/she/it would reply.

Agreed, care is needed in order to avoid false positives.  ("nobody",
by the way, is often aliased thus in stock sendmail installations
on various 'nix boxes:

	nobody: /dev/null

so while there's nothing wrong with it per se -- and it's not a
special address per RFC 2142 -- I find myself wondering how many
people have hardwired it into various anti-spam setups. ;-) )

I should probably mention that I'm not a fan of noreply at example.com
and similar addresses, which seem to be often used these days for
one-way mailing lists: I think *all* messages should be replyable.
But I figure that, as a practical matter, as long as so many sites
are using that convention, we might as well leverage it to our


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