I, too, run 4 email servers serving 12 domains overall, for about 11 years. I don't remember any email-related issues in the last 5 years.
One of the server sends and receives emails for the forum, sometimes up to 1000 messages a day. It was set up 5 years ago.
Maybe this is a serious issue when you use popular VPS providers/IP ranges, but I use smaller providers, and just don't remember any email-related issues everybody are talking about.
For me, email self-hosting as easy as installing mail-in-a-box (for sending+receiving) or just plain exim/postfix (for sending only), with proper configuration.
One of the server sends and receives emails for the forum, sometimes up to 1000 messages a day. It was set up 5 years ago.
Maybe this is a serious issue when you use popular VPS providers/IP ranges, but I use smaller providers, and just don't remember any email-related issues everybody are talking about.
For me, email self-hosting as easy as installing mail-in-a-box (for sending+receiving) or just plain exim/postfix (for sending only), with proper configuration.