How to get out of google spam list?

Question

Google

Not long ago, the mailbox of one of the employees was hacked; there was a queue of tens of thousands of letters on the mail server, because admins noticed this late, our mailbox got into the Google spam list, now mail from our domain does not reach at all, the following is written in the logs:

: host ASPMX.L.GOOGLE.com[2a00:1450:4010:c04::1b] said:
550-5.7.1 [2a02:6b8:0:801::1 12] Our system has detected that this
message 550- 5.7.1 is likely unsolicited mail. To reduce the amount of spam
sent to 550-5.7.1 Gmail, this message has been blocked. Please visit
550-5.7.1 support.google.com/mail/bin/answer.py?hl=en&answer...
for 550 5.7.1 more information. s18si15389839lbv.17 - gsmtp (in reply to
end of DATA command)

Were there those who persuaded Google to start trusting the domain?

Answer 1

Google very often uses the Spamhouse database . Get out of there - Google is likely to miss.

Answer 2

I would probably knock on Google's technical support to resolve this issue, because if there is an option to automatically exit the blacklist, then this is clearly not a quick option

Answer 3

Google automatically throws out, quarantine can be up to 3 months. it's easier to ask the provider for another ip