Hi
> We're running a basic DNS server, with many domains using us
> as the nameserver specified in their WHOIS record. Now, by
> the letter of DNS law, every domain must have a working MX
> record pointing to a working mail server, with a postmaster
> account attached to this...
IMHO that's incorrect.
Every domain that IS USED for smtp transport needs to have a postmaster
account.
That's a requirement of the mail rfcs.
AND that all does not require MX records. If they are absent, A records are
used.
However every domain must have a adminitrative account listed in it's soa
record, that must accept mails. But it does not have to be in the same
domain.
> Now I can be quite sure in saying that 99.999% of the domains
> point to us as the nameserver are not interested in ANY email
> from their domain, let alone something from postmaster and/or
> hostmaster... So in the interests of getting a few
> "more-strict" domain registrars working with us, I've set up a
> exim4 server, in the hopes that it can accept any mail that
> comes it's way that matches the rule "postmaster@*", and
> sticks it into :blackhole: or /dev/null or equivalent...
Which will be as bad.
Either accept them and read them or don't accept them.
Did you set up MX records for all those domains pointing to your exim?
