The emails that I send are seen as junk/spam by hotmail/live/outlook accounts.
I installed Centos 7 + DirectAdmin on a VPS. I've a static ip of course, I setup reverse dns ptr record (thru ISP) that matches my mail server host name, IP is not on any public blacklists, Setup MX, DKIM, SPF, DMARC. Sending test mail at [url removed, login to view] obtain 10/10 points.
Mail are absolutely normal, not like a spam. I join snds and jmrp microsoft programs because it was suggested by microsoft support.
I contact Microsoft thorough eform [url removed, login to view] ... ct=eformts but they give me this response:
Here are some specific recommendations for you to consider:
Brand your mail
Ensure mails are cleanly formatted and clearly identifiable as originating from your service.
Follow content and formatting best practices
There are numerous Internet resources which offer advice and best practices, we recommend you refer to these resources for assistance creating well formatted and more deliverable email.
Highlight Opt In
Clearly mark your emails so that Windows Live [url removed, login to view] customers are able to identify that they requested or subscribed to emails from your service.
Ensure your email lists are up to date
Remove those who do not want to receive the emails and consider making the unsubscribe process more visible to ensure you are only delivering mail to interested recipients.
Join the Junk Mail Reporting Program (JMRP)
We believe that your recipients are the best indicator that the email you are sending is wanted. The JMRP program allows you to see which of your emails [url removed, login to view] users have marked as junk or unwanted mail. Reviewing the results in JMRP will provide to the most direct information on what characteristics of your email, customers, and ultimately SmartScreen®, consider to be unwanted. This helpful feedback mechanism allows you to ensure that mails being sent from your IP are not resulting in negative feedback that could impact your sending reputation. Being vigilant about users who mark your e-mail as unwanted or the types of messages that are being marked as unwanted can help you keep mailing lists updated with only interested users and modify future campaigns. In addition, monitoring user complaints can help you identify unintended mail traffic or detect a potentially compromised account sending unwanted mail to your customers. Enroll at [url removed, login to view]
Join the Smart Network Data Services program (SNDS)
The SNDS program provides data about traffic seen originating from your registered IP, such as mail volume and complaint rates. The data is built from the log files of the inbound mail machines and other servers at [url removed, login to view] and Microsoft and represents factual information about the traffic from your mail servers to [url removed, login to view] users. For more information about this free program refer to [url removed, login to view] To register, please go to [url removed, login to view] (Tip: As part of the enrollment process, you are asked to sign the JMRP program agreement and then send a response to Support indicating that it has been signed. It's not uncommon for that step in the enrollment process to be missed.)