Of course you are talking about these.. (yeah, it's a pandemic over
there) and no use reporting them..
Received: from mail0.crzcompany.com (HELO mail0.crzcompany.com)
(159.65.131.137)
From: E-mail Server <[email protected]>
Subject: Password Expiry
(Several variations, all similar, and mail0 or rdns0 is a common trait)
We simply use it to confirm that they should be blacklisted..
But most of their space is already marked dirty by many RBL's and
filtering services, and there was a thread on this topic already on this
list about how even DO isn't recommending their IP space for email I
seem to recall.
We just use our dynamic rule engine, and distributed feedback systems so
that when any of our technologies or customers systems detect such
activity, it's instantly on the bad list if it wasn't already..
We even have an RBL just for Digital Ocean IP Space ;) (Use it in
conjunction with other rules, makes for simple way to filter)
But based on the extensive nature of the problem over there, the
reputation of their whole network is already degraded in many filtering
services.. By now there probably is even a SpamAssassin scoring penalty ;)
On 2021-08-10 12:26 a.m., Popovic Antonie via mailop wrote:
Hi everyone,
I can see a lot of spoofing activity from Digital Ocean servers and I
was wondering if someone already tried their abuse report and if it's of
any use, if they have control over what happens on their infrastructure.
Or in case we have someone from Digital Ocean here, could you please let
me know if there is any point in trying to report the abuse based of the
DMARC aggregated reports (a few millions).
Looking forward to hearing your experiences,
Toni
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