Your neighbor got you blocklisted

Your neighbor got you blocklisted

Heard this week: a managed host that moved budget accounts onto shared sending-IP pools is watching deliverability complaints climb, and a source tells us it's a density decision, not a bug.

When a host packs more sites onto fewer outbound IPs to save on address space, one spammy neighbor can drag the whole pool onto a blocklist. Your transactional email starts landing in spam through no fault of your own.

Unconfirmed which provider consolidated first, but the symptom pattern is showing up across forums.

Watch this: if your password-reset emails suddenly bounce or land in junk, check whether your host put you on a shared IP pool. The fix is usually a dedicated IP they'll happily upsell.