Thanks, Mark -
that was already very helpful.
On 25.11.2024 17:57, Mark Fletcher via mailop wrote:
[...]
For the most part, in my experience, the largest ESPs are very good.
[...] Apple iCloud is also good, although their bounce reasons are very
opaque. [...]
They are precisely the reason that I started this (sub-) thread - as
even after multiple attempts I failed to extract the exact reason from
the webpage referred to in:
<...@icloud.com>: host mx01.mail.icloud.com[17.56.9.31] said: 554 5.7.1
[CS01] Message rejected due to local policy. Please visit
https://support.apple.com/en-us/HT204137 (in reply to end of DATA
command)
There it reads "iCloud Mail authenticates all inbound emails using SPF
and DKIM" - is this 'and' a strict requirement? As in: "All inbound
emails must have proper SPF *and* DKIM"? If so then I already know to
whom to talk to...
We make it easy for our users to see any errors their ESPs are sending
back to us when we try to deliver email. That helps, because they can
take it upon themselves to address any delivery issues.
I see.
If possible, I'd like to learn a bit more of your process(es) how you
automagically forward bounces, suspension and unsubscription
notifications to the respective user that otherwise would only reach the
list owner by default.
Thanks & best,
-C.
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