Re: [Exim] lowest numbered MX record points to local host

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Author: Dave C.
Date:  
To: michael
CC: gvz, exim-users
Old-Topics: Re: [Exim] lowest numbered MX record points to local host
Subject: Re: [Exim] lowest numbered MX record points to local host
On 4 Jan 2000 michael@??? wrote:

> > > I agree. Any idea how to educate cityweb.com? I complained about such
> > > MX entries for other domains before, but without any positive feedback.
> >
> > Set up a "resolver" for exim that claims responsible for
> > "cityweb.com"? Directing the MX wbgate.warnerbros.com?
>
> It's not only cityweb.com, that was just the last frozen mail I looked at.
> The first time I saw such MX entries was a couple months ago. Since then,
> they got quite popular for reasons I fail to imagine.


Imagine you are a spammer sending mail, and that more and more MTA's
are verifying valid domains in mail addresses.. You need a valid
domain, but dont want to really get any mail. Solution? MX 10
localhost. It comes back as valid but no mail can ever be sent there..

> > Btw., what would happen on your local machine if you delete
> > the loopback interface? This is, of cause, not a general solution,
> > but I guess the MTA is running on a dedicated server.
>
> I would prefer to bounce mails right away when the recipient is verified.
> It's a matter of beauty. I can remove the frozen messages for such
> domains automatically or do something else, but refusing the message
> seems much better. Besides, some programs need the loopback interface.
>
> Michael
>
>
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>


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