One of our third-party DNSBL services, SpamCop, allowed their domain to expire, presumably as a mistake, and began to return “listed” for all DNSBL checks. We use a DNSBL as an early rejection for spam emails, and this caused 21 incoming emails to be wrongfully rejected. We have removed SpamCop from our list of DNSBLs and filed a ticket to improve our monitoring so that we may catch this sooner. Incoming emails are working now, but be advised that if your postmaster uses SpamCop, emails from Sourcehut will likely be rejected until the issue is resolved. (13:25 UTC — Jan 31)