This seems like a no-brainer to me.<p>I've attempted to set up my own email server for personal use multiple times. Even with fulfilling the tablestakes of SPF, DKIM, and DMARC etc, I always run into at least one major email provider blocking all emails from me specifically because of who I host my VPS with. Outlook in particular seems to aggressively block all SMTP communication with both DigitalOcean and Linode. As an individual, there's nothing I can do about this.<p>I've just resigned myself to either not being able to not communicate with email addresses on Outlook, or use an alternative email address for those rare occasions.