On Wed, 6 Jun 2018, Rob McEwen wrote:
Here is an article I posted on Linkedin about spam filtering IPv6-sent
email.
"Should mail servers publish IPv6 MX records? Could this harm your spam
filtering?"
https://www.linkedin.com/pulse/should-mail-servers-publish-ipv6-mx-records-rob-mcewen/
This got me thinking about IPv6 and MX records in other contexts ...
I'm curious.
If a domain has no MX record, do all servers deliver to an AAAA record,
as required by (at least) RFC3974,
or do some email systems ignore domains with no MX and no A record ?
Does anyone use lack of MX record (for envelope sender domain I guess)
as a marker for spaminess ?
(This *should* not matter in Rob's case as there will be an IPv4 MX record.)
--
Andrew C. Aitchison Cambridge, UK
and...@aitchison.me.uk
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