I have a new domain and mail-in-a-box server set up correctly. Unfortunately, when sending to Gmail, it treats emails from my domain a a spam.
The domain is not blacklisted and DNS settings are also correct. I checked it using www.mail-tester.com and it shows score 10/10. I did not send any mass emails and just sent several test emails only. So my domain definitely should not be treated as spam.
The only thing that I noticed that my domain has NEUTRAL rating. I heard that gmail could mark emails coming from domains with NEUTRAL rating as spam. Is it true, have you faced with the similar issue? How can I fix this?