Autor: Thomas Klaver Fecha: A: exim-users Asunto: [exim] Usage of dnsdb primary mx
Is it possible to retrieve the highest prioritized MX record using a
dnsdb lookup? If so, how?
How would dnsdb affect a server's load? We're talking about a fallback
platform for approximately 500+ domains - and growing.
Are results of a dnsdb lookup cached? If that may be the case, for how
long are they cached?