I had a domain get blacklisted from too much spam on April 22nd of this year. Long story short my mom clicked on something she shouldn’t have and compromised her e-mail. Spam was stopped within a day of noticing. Since then I have implemented Domain Keys, feedback loop, DMARC, etc.
The stats on postmaster tools are not available after April 29th.
What has been your experiences with Google Postmaster? Does it take over 30 days to get de-listed?