On Thu, 30 Aug 2001, Philip Hazel wrote:
> On 30 Aug 2001, Thorkild Stray wrote:
>
> > adm.mail.com MX 5 gw.mail.com
> > adm.mail.com MX 10 recv.mail.com
> >
> > gw.mail.com does not allow connections directly to itself, it is
> > firewalled. To send mail, one must send it to recv.mail.com, which is
> > allowed to connect to the gw directly.
>
> DON'T DO THIS! Sorry for shouting, but this is something that is
> *really* annoying. It means that every MTA in the world that is trying
> to send to you is going to try gw.mail.com first, and waste time and
> resources timing out, before it tries the second MX.
>
> > The problem is when this has been going on for a while. Then the
> > "gw.mail.com" machine is blacklisted in Exim and it is bounced with:
>
> Quite right. Sorry to be hard here, but I think this is your problem,
> not Exim's problem.
Actually, I dont beleive the sender of the message is the admin for
mail.com - its just someone to whom his machine is trying to deliver to.
>
> There should never be an MX in the publicly-visible DNS for an MTA that
> cannot be accessed by everybody.
>
>
>
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