> On Feb 13, 2019, at 9:48 AM, Andrey Repin <anrdae...@yandex.ru> wrote:
>
>>>
>>> milter_default_action = accept
>>> smtpd_milters = inet:localhost:12301
>>> non_smtpd_milters = inet:localhost:12301
>
> inet:[localhost]:…
> Save a roundtrip to DNS server for MX lookup. It's not needed, nor going to be
> successful here.
For the record, there are no MX lookups involved in resolving the TCP endpoint
for a milter. To avoid DNS lookups here, use:
inet:[127.0.0.1]:12301
instead. With hostnames the [] are optional and usually not used. With IPv4
address literals, the [] are also optional, but preferred. With IPv6, they're
required:
inet:[::1]:12301
--
Viktor.
