Speaking of Hetzner, any comments on the recent spat of widespread usage
of the amazon.com, 163.com, jobs.com on your networks?
Are these compromises, bad sign-ups, or some actual other usage patterns?
On 2019-10-21 6:51 a.m., Hetzner Blacklist via mailop wrote:
My job involves (trying to) monitor the reputation of our ASN, so I have
some experience here.
I think it's important to start by noting that reputation isn't
something you can easily quantify. There is also no single authority
deciding (or showing) what the repuation of a provider is.
The real information I suspect you are looking for is in the filters of
the large email providers, and those are more or less black boxes. In
other words, neither Brandon nor Michael is going to tell you to move to
Provider ABC because doing so will mean none of your emails will ever
land in the spam folder of Gmail or Outlook again. There are simply way
too many variables for that.
What I can provide is a list of services that will give you, let's call
it a hint, at the reputation that a provider might have.
As far as I know there are currently 4 different DNSBLs that will show
the amount of IPs in a single ASN that are blacklisted:
http://www.uceprotect.net/en/rblcheck.php?asn=<number>
https://www.megarbl.net/asn_list.php?asn=<number>
http://suomispam.net/#!origin/AS<number>
https://www.spamhaus.org/sbl/listings/<domain>
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