[LUNI] Re: sendmail - I have a dirty box

[Martin Maney]

On Sun, Aug 20, 2006 at 12:38:42PM -0700, Ramin K wrote:
> Adding these sorts of statements to Postfix stops most of this nonsense 
> from getting into your network.
> 
> smtpd_recipient_restrictions =
>         reject_invalid_hostname,
>         reject_non_fqdn_recipient,
>         reject_non_fqdn_sender,
>         reject_unknown_sender_domain,
>         reject_unknown_recipient_domain,
>         reject_unauth_pipelining,

In the best of all possible worlds, this would all be not only
reasonable, it would be the clearly right thing to do.  In the world we
inhabit, which is but a pale shadow of that utopia, I've seen email
from real companies that I wanted to receive get caught by some of
these.  invalid_hostname and/or unknown_sender_domain might have been
the culprits - it's been too long since I last messed with these
settings, and it's too late to be motivated to check.  :-/

There are a sad lot of somewhat broken MTAs out there.  Makes you
wonder how many of the admins also bowl...

-- 
Some people hack for fun, some because they want things their way;
some don't because they can't, and some because they can't be bothered.
Some can make anything work, some could but would rather not,
and some would misconfigure a bowling ball.  -- unknown