The last releases of Knews (1.6.5 Free version and 2.2.7 Pro version) come with 591 email domains blacklist.
This emails are used widely by bot’s spammers, and the most are temporary email services. It cause bad ratios of opened emails, and too much emails sent and bounced. If you are configured an autoresponder for non confirmed users, one more email will be sent to every bad email directions…
Don’t disregard it, you can be labeled as spammer or your website can be blocked! One Knews user has been blocked from his webhosting (are 1 and 1), because they activity (10-20% bad emails sent) was flagged as spammer or website virus infected by an automated system, without any previous advice.
After upgrade, Knews will block all emails from the blacklisted domains, on widget subscription, user creation and CSV import. You can turn off this feature (we don’t know why you should want to do) in the main configuration Knews page: Knews > Config.
Well, next subscriptions will be clean, but… what about older subscribers? Knews comes with a tool to clean your lists, you should scan one time your subscribers with it: