Re: [Exim] MX verification ACL

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Autore: Philip Hazel
Data:  
To: Drav Sloan
CC: exim-users
Oggetto: Re: [Exim] MX verification ACL
On Wed, 22 Jan 2003, Drav Sloan wrote:

> > on your dnslookup router. Of course, that will cut you off from quite a
> > large number of Internet hosts.
>
> Blimey you think so?


Oh yes. There are lots of one-box sites that don't seem to both with MX.
Personally, I wish the rules would change, because MTAs waste a lot of
retries sending to bad domains that have A records but no MX. Often
happens if a PC user mis-configures an MUA, for example.

We insist on MX records within our local domain, and use

mx_domains = *.cam.ac.uk

on our MTAs. That at least gets rid of the problem locally.

--
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.