I wonder how many words they exchanged with Linode over the incredible
amount of spam leaving their network for such a long time that it
degraded everyone's view of mail from their ASN. I'm not sure if that
problem is still continuing because I just blocked Linode and
whitelisted the good senders on their network, as that was the lower
hanging fruit.
On 2025-12-17 05:04, Paul Menzel via mailop wrote:
Dear Mail Operators,
Konstantin Ryabitsev, an admin for kernel.org, posted a summary of the
discussions at the maintainer summit [1][2]. They also have a lot of
problems with “major hosts”:
## Continuous degradation of SMTP
We're increasingly having to deal with the degradation of the SMTP
support by
all commercial companies:
- major hosts are increasingly not interested in getting mail from
anyone
who isn't also a major mail service provider
- their "bulk sender" guidelines are no good for us (e.g.
requiring that
we add one-click unsubscribe footers to all email)
- their "spam filters" are increasingly based on training data,
which
means that "looks different from what most of our users receive"
is
enough to have patches and code discussions put into the "Junk"
folder
- they apply arbitrary throttling ("too many deliveries for the
same
message-id", "too many messages from the DKIM domain
foobar.com")
- anti-phishing services at commercial IT companies do horrible
things to
incoming messages
Most people here know that already, but just wanted to share the
observations.
Kind regards,
Paul
[1]:
https://lore.kernel.org/all/20251209-roaring-hidden-alligator-068eea@lemur/
[2]: https://lwn.net/Articles/1050179/
(freely accessible two weeks after release, but it’s just a
session report and contains the same facts as [1])
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