Re: [Exim] Refuse connection if no MX for sending host

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Szerző: Matthew Byng-Maddick
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Címzett: exim-users
Tárgy: Re: [Exim] Refuse connection if no MX for sending host
On Wed, Oct 22, 2003 at 05:46:47PM -0700, Rick Duvall wrote:
> Is there a way to refuse an SMTP connection if the connecting host doesn't
> have an MX record in DNS? Is there a downside to doing this?


How many hosts on your network have MX records ? (I'm having to assume that
you mean: host a.b.c.d connecting:

d.c.b.a.in-addr.arpa (ptr) -> z.example.tld,...
z.example.tld (mx) -> some.host.example.tld,...
some.host.example.tld (a) -> a.b.c.d,...

or do you not mean that? If not, your question is probably meaningless...

MBM

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Matthew Byng-Maddick         <mbm@???>           http://colondot.net/