I've set up my Postfix mail server with almost everything that I've been reading about:
- Reverse DNS
- SPF Records
Everything seems to work (spf=pass, dkim=pass, domainkeys=pass etc). Also, my SMTP seems to pass all diagnosis tests on mxtoolbox.com. Yet for some reason, Gmail and Hotmail keep flagging my messages as spam.
Furthermore, I've also checked my IP to see if it has been black listed but seems that everything's good there too.
After hours of searching through a lot of forums, I'm still not able to find a fix to this. It might be worth noting that my domain name is completely new. Could there be trust issues because of a young domain name?
Another thing is that my domain is hosted on GoDaddy, only the mail server is hosted on a separate machine. Could this be a reason?
I know that this question has been asked many times, but after installing dk-milter for domainkeys and having success with Yahoo mail, I'm clueless about what could possibly be remaining to get messages across to Gmail and Hotmail without them being marked as spam.