Dirtbag spammers are using the sslip.io domain to send spam email, which has triggered the addition of our domain to Spamhaus Domain Blocklist (DBL) (so far nip.io has remain unscathed).

We fight this the best way we can: we make the SPF (sender policy framework) more restrictive; instead of our previous "soft fail" policy if the email doesn't come from one of our approved mailservers (i.e. Protonmail), we now have a "hard fail".

From a personal standpoint, it's discouraging to have to spend an hour dealing with this.

TODO: I might also remove the dynamic MX feature, e.g. dig mx 127-0-0-1.nip.io → 0 127-0-0-1.nip.io.

From: Namecheap Legal & Abuse Team legalandabuse@namecheap.com

We have recently received some reports indicating that there might be unsolicited email activity associated with your domain. The following domain registered under your Namecheap account has been flagged by anti-spam organizations:

The Spamhaus Project Ltd. DBL: sslip.io