3 ms·
My experience has been similar. The most important thing that can't be easily resolved is if the server's IP is already on the blocklists, but other than that D
by petronio 6y ago
My experience has been similar. The most important thing that can't be easily resolved is if the server's IP is already on the blocklists, but other than that DKIM, DMARC, SPF, and reverse resolution together solves the ~~magical ritual~~ heuristics that make the big guys happy.