On 2011-04-01 01:01:34 -0700, Murray S. Kucherawy wrote:
> Those machines should be talking to a public-facing MTA that
> tolerates unqualified names; they shouldn't be talking to the public
> Internet with an unqualified name.

The main smarthost of my ISP gets blacklisted by some lists each time
someone sends spam (this is a small ISP, so that it gets blacklisted
much easier than large ISP's, which are probably whitelisted). There's
also a smarthost that checks incoming messages with an antispam
software, but false positives would be dropped without notice, which
is unacceptable.

> But even then, sending a hostname without a domain name

Actually mine has a resolvable domain name after the first dot (only
the full hostname isn't resolvable).

> violates the SMTP RFC. In the face of such widespread abuse, I'm a
> fan of being as strict as possible.

Well, it violates only a SHOULD (because I should send an IP address
while I don't). In practice, not so many people reject messages with
unresolvable hostnames. So, currently, that's better than using one
of my ISP's smarthost.

I could now use SASL (this wasn't possible in the past because I didn't
have my own server), but there would still be problems to solve: how
can I use a fallback (on the client side) to the direct method when for
some reason, the server is not reachable?

-- 
Vincent Lefèvre <vinc...@vinc17.net> - Web: <http://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / Arénaire project (LIP, ENS-Lyon)

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