> it’s infamous for having an extremely strict spam filter for incoming emails from people who run personal or niche mail servers. I run my own mail server and

> it’s infamous for having an extremely strict spam filter for incoming emails from people who run personal or niche mail servers. I run my own mail server and I have zero problems with reaching Google Mail users. Google – like other big mail providers – just expects you to set up DMARC and DKIM authentication for your server, which is not hard to do. Linode already provides a convenient guide to setting this up for any Ubuntu or Debian installation.