On 18.06.2024 at 19:45 . Mark Stone via mailop wrote:
> FWIW, we use Fail2Ban to block all AWS EC2 IPs that have an
> "ec2-xxx.compute...amazonaws.com" PTR record, and another Fail2Ban rule to
> block hosts that HELO with "127.0.0.1".
That's a good idea, except when you have to deal with compan
Which is why of course there should be an exemption list of IPs that are
not configured right, and still need to reach/access/authenticate to
your server, but they are rare and far between, compared to the abuse
volumes.
And REALLY you need to watch those malicious actors who find that the
lo
since aws ses was blocked, other esp such as mailchannel, mailgun,
sendgrid can be blocked also?
That's a good idea, except when you have to deal with companies like
Everbridge Inc or Tencent QQ, which apparently think it's a good idea to
rent VMs at various cloud providers and run them wit
