[156005] in North American Network Operators' Group
Re: Blocking MX query
daemon@ATHENA.MIT.EDU (Tony Finch)
Tue Sep 4 07:38:38 2012
Date: Tue, 4 Sep 2012 12:37:44 +0100
From: Tony Finch <dot@dotat.at>
To: Ibrahim <ibrahim1@gmail.com>
In-Reply-To: <CA+Nv4GC8QGiOGnmFJGDH95MpnxNyUCdwMT3WrBz+7Bj5vDtmsg@mail.gmail.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Ibrahim <ibrahim1@gmail.com> wrote:
>
> We are thinking to block MX queries on our DNS server, so only spammer that
> use their own SMTP server will got affected. [...] Any best practice to
> block MX query?
Don't do this. It won't hinder spammers and it'll cause problems for legit
users.
Tony.
--
f.anthony.n.finch <dot@dotat.at> http://dotat.at/
Forties, Cromarty: East, veering southeast, 4 or 5, occasionally 6 at first.
Rough, becoming slight or moderate. Showers, rain at first. Moderate or good,
occasionally poor at first.
