Verify List Twice


New Member
A list with 15,000 emails showed roughly 5,000 "bad" addresses. However, when exporting the "bad" addresses into a seperate list and running the 5,000 "bad" emails, it showed that 1,000 of them are "valid". Is there a reason that the first run showed them as bad but the second run showed them as good? I'm guessing that your server tries to connect 3 times per email test and the second run was more successful? Is there a setting that you recommend to avoid this problem in the future?


Staff member
Is there something in common with all those addresses? What response from the server did you get in the first test?