Hi guys, I dont know if this has been brought up yet, but how early do you think your domain get DBL. I think it's instantly, as soon as you drop and your mail get delivered to the DBL trap. what do you think?
(Un)fortunately no - DBL traps are smarter than that (otherwise, say, an opt-in confirmation email sent to a trap would cause listing). I cannot tell you how many hits exactly you have to make but from my experience it usually takes from 3 days to 1 week of mailing if you hit their traps.
Avoid it If you are listed, this usually means that there is something wrong with your data. Remove inactive data, scrub your list, make sure you don't mail to IP ranges belonging to well known antispam companies, analyze your web server's access logs to detect click bots, kill 'em all - this usually works.