Bouncing mails

[snakes1100]

Its more likely that you was flagged a spamemr based on the amount of email you sent to gmail.it, not because of bounces on accounts that dont exist, but that also plays a factor, as gmail has no bulk sender list available for the public, you will simply have to wait it out with gmail, they will eventually remove you on their own.

The hack in question, ive never used.

How many emails are you sending out a hour / day etc to gmail, must be a lot for them to blacklist your IP