Over on the Word to the Wise blog, Steve Atkins reports on something very alarming: That Trend Micro's MAPS blocking lists seem to be playing silly buggers with spamtraps. Specifically, that while their stated requirements for list management best practices has always mandated double opt-in (aka confirmed opt-in), they may still list an ESP or sender anyway, based on mail to supposed "spamtrap addresses" that have actually clicked to confirm the subscriptions in question. OUCH. This seems like really bad form for Trend Micro -- it is absolutely worst practice to click on links in mail sent to spamtrap addresses, then use that mail or subsequent messages as a basis for blocklisting.
