Luc Pardon:
> On the same topic: what if smtp_mx_address_limit was simply made to
> apply for each family separately? E.g. the default of 5 would mean: keep
> max 5 IPv6 addresses _and_ max 5 IPv4's ?
The purpose of these and other Postfix limits is not to frustrate
legitimate mail operators. Instead the purpose is to maintain sanity
under insane conditions. Therefore I would not be comfortable with
suddenly doubling these limits.
I prefer to remove the ability to disable safety mechanisms. If
sites want to receive MX responses that specify a bazillion hosts
(none of which is likely to respond), then they can configure Postfix
to try all those hosts, and watch their mail queues melt down.
Wietse
