We have recently found that our many ip address were listed in spam, we were having SPF records and Reverse dns entry for all the ips which we used to send out going mails.
Now we have installed and configured DKIM Milter forÂ multipleÂ send mail servers. Now all our mails are coming in inbox and dkim key is also showing as pass for all the email providers.
After one week , we have noticed that the ips got removed from spam list ….
Will post an article soon regarding theÂ implementationÂ of DKIM Milter and integration with multiple send mail servers