Gray list

Hallo everyone, gmail put my server in a gray list this cause emails to take much time to deliver

i check my server IP and everything is ok, i also submit a request for google and there is no reply from 30 days ago
other advices? thanks

Gmail Blacklist or Spam Box?
First, make sure you have a blacklist problem. If Gmail is blacklisting your server’s IP, their servers send one of these bounce messages:

421-4.7.0 unsolicited mail originating from your IP address. To protect ourn421-4.7.0users from spam, mail sent from your IP address has been temporarily 21-4.7.0 rate limited. Please visit http://www.google.com/mail/help/bulk_mail.n421 4.7.0 html to review our Bulk Email Senders Guidelines. l41si55243084eef.158 - gsmtp
or

Remote host said: 550-5.7.1 Our system has detected an unusual rate of unsolicited mail originating from your IP address. To protect our users from spam, mail sent from your IP address has been blocked. Please visit http://www.google.com/mail/help/bulk_mail.html to review our Bulk Email Senders Guidelines.</pre
Gmail sends these messages when you are blacklisted; they do not send any notices regarding spam box placement.

supporthost said:

i also submit a request for google and there is no reply from 30 days ago

Click to expand...

You will never got reply from them, i think they will not answer or support this because they are so busy.

supporthost said:

i check my server IP and everything is ok

Click to expand...

Which tool did you check? are you sure your IP is not in blacklist?

Also did you check your email server's scores?

Hello. maybe stop using gmail