Mox is a modern full-featured open source secure self-hosted email server

github.com

14 points·LinuxBender··4 comments

i remember reading an article here awhile ago about someone with a big project like this finally giving up because all the big players have a monopoly on what is considered spam. Like no matter how much you play by the rules, you can never get off some spam lists unless you are gmail or hotmail etc.

Yeah, a lot of people who run their own email server keep it for inbound mail, and use something like Amazon SES or Sendgrid for outbound mail (so it isn’t marked as spam). Most residential ISPs block SMTP’s port 25 as well.

Gandi is a good registrar for situations like this, you can use their free hosted email, create one email account, and alias all email addresses you'll use to that inbox. Then, change the MX records to point to your self-hosted email server, and configure the server to relay through the Gandi SMTP account you created.

You can often tell which ISPs are competently managed by looking at which direction TCP/25 is blocked. Around me, there are 2 ISPs.The one that I use blocks port 25 outbound and leaves inbound open (sensible).

The incompetent, smaller ISP blocks 25 inbound, but leaves outbound wide open, as well as 587 inbound open. This effectively blocks people from receiving mail directly, but it does nothing to prevent outbound spam from being sent.

all the adjectives!

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