Re: [ot] hosts that ignore mx records

From: Simon White (no email)
Date: Fri Nov 01 2002 - 10:53:57 EST


01-Nov-02 at 15:33, Bruno Postle () wrote :
> On Fri 01-Nov-2002 at 02:22:02PM +0100, Marc Owen wrote:
> >
> > Some hosts try to connect to the A records of the domain (the bare
> > domain name resolves to webserver ips) instead of using the mx
> > records, and mail is refused because those (web)servers don't accept
> > mail for the domain. They are webservers, not mailservers.
>
> I asked this same question a while back. The answer is that you will
> refuse a small but significant amount of non-spam @example.com mail if
> you are listening on port 25 on an address that resolves example.com.

Therefore, a small but significant amount of SMTP services are not doing
DNS lookups properly, or have broken DNS lookup libraries, or similar.

> The solution is to: ignore it, bind postfix to a different address, or
> (my favourite) put websites on http://www.example.com/ instead of
> http://example.com/

What difference does that make? Doesn't make the blindest bit of
difference to your MX records, at least.

-- 
[Simon White. vim/mutt. . GIMPS:74.58% see www.mersenne.org]
Whenever I watch TV and see those poor starving kids all over the world, I
can't help but cry. I mean, I'd love to be skinny like that but not with
all those flies and death and stuff.  -- Mariah Carey
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