I have sent out a campaign yesterday and another today and both have 83% bounce rates.
From the various messages on your help sites I see that this problem is not restricted to me.
These are very time sensitive emails and the problem must be fixed immediately.
Please contact with an answer.
Sunday April 3rd. 2:19pm.
Thank you for reaching out to the Community! I do apologize that you are receiving a high bounce report. This means that we are receiving a message from your customer's Internet Service Provider that the email you sent too could not be delivered, and we do receive multiple reasons why. Please click here to see why your emails are bouncing and what we recommend you should do with them. Thanks...