Learn how to self-host your own email server using mailcow, an open-source suite of Docker containers. This step-by-step tutorial shows you how to set up an full-featured email server on a cloud server, so you can get private email on your custom domain and stay in full control of your data and privacy.
This guide covers everything from server setup to configuring the critical DNS records (SPF, DKIM, and DMARC) required to avoid the spam folder and achieve a perfect mail deliverability score.
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🔗 Code snippets and all links 👉
https://tonyteaches.tech/mailcow-self-hosted-email-serverWhat You’ll Learn
✅ How to set up a mail server with mailcow & Docker
✅ How to configure all critical email DNS records (A, MX, CNAME, and PTR)
✅ How to set up email authentication (SPF, DKIM, DMARC)
✅ How to test and ensure your self-hosted email avoids the spam folder
What You’ll Get
✅ A private, secure, self-hosted email server
✅ Unlimited email addresses for your custom domains
✅ A perfect (or near perfect) mail deliverability score
✅ Full control over your data and digital privacy
⏱️ Chapters
00:00 Why Self-Host Your Own Email
00:40 Server & DNS Requirements
01:48 Initial DNS Records (A, MX, CNAME)
04:26 PTR Record (Reverse DNS)
05:25 Server Setup & Docker Install
08:36 Install & Configure mailcow
12:20 Access mailcow as Admin
13:41 Add an Email Domain
14:22 Add an Email Address
15:08 Final DNS Records (SPF, DKIM, DMARC)
20:32 Email Deliverability Tests
23:10 Email Server Maintenance