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					Originally Posted by  crucifissio
					 
				 
				
			
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 If we are talking about mailing - We split lists by small logs (around 100 recipients) and then synchronize it with data from - for example - MSN postmaster which shows only the period of time at which the spamtrap hit happened. Then we mark these recipients as temporary hold and re-run mailings to them from separate dedicated IP, if we get spamtrap again we forever delist all 100 recipients. You can go further and after a number of consequent splits and tests get smaller and smaller query but it's time-consuming.
f we are talking about list scrubbing, we check list against our database and mark all emails that we have marked as non-existing or other way unsolicited in past like potential spamtraps.
We have a giant email database with different 10munitemail like domains which are spamtraps for sure.
Peace 
