Except it doesn't unless you also remove free relays, which effectively gets you to isolate on a small network island.
Most free relays have some kind of spam mitigation, as do clients. In fact, Spam is mostly tackled client-side.
Login to reply
Replies (1)
Yep, I haven't had too many issues with spam and I don't dabble with paid relays. Isolation would be a much bigger problem.