On 09/04/2021 09:10, Florian.Kunkel--- via mailop wrote:
Hi Tom,
/
Would someone from t-online.de please publish the COMPLETE and DEFINITEIVE set
of ALL rules for sending to your customers? Preferably on your web site instead
of in mailops, so that everyone can see them?
I’ve seen bits and pieces here, with many unanswered questions. It’s not at all
clear what to do to meet your new requirements.
\
let’s start with the basics.
your bounce address should be reachable, if you expect someone to accept your
mails.
care for bounces ... after a year or more.
SCNR
for now you'll find our expectations documented here
https://postmaster.t-online.de/index.en.html#t5
That states that t-online does not use SPF nor, outside very narrow
fields, DKIM for making mail delivery decisions.
Does t-online have operational experience with either as applied to your
customer's inbound mail streams or historical statistics about them, and
their alignment, in your customer's inbound mail streams? It'd be
interesting data to share, and might make people more comfortable with
your planning.
Cheers,
Steve
if you are sending via any sort of pool or relay and want to be prepared I
posted the /upcoming rules/ here on the list.
Florian
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