--- title: "How to Host your Own Email Server" url: https://daily.dev/posts/how-to-host-your-own-email-server-vvcy0qptr source_url: https://blog.miguelgrinberg.com/post/how-to-host-your-own-email-server type: article source: "Miguel Grinberg" published: 2026-05-03T09:32:32.657Z updated: 2026-05-03T09:33:14.484Z tags: ["security"] reading_time: 29 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # How to Host your Own Email Server **[Miguel Grinberg](https://daily.dev/sources/miguelgrinberg)** · 29 min read · 0 upvotes · 0 comments ## Summary A step-by-step guide to self-hosting an email server using Postfix in Docker, covering DNS setup, email forwarding, DKIM, SPF, and DMARC configuration. The author chose this path to avoid paid services like Mailgun or SendGrid, estimating costs at ~$6/month for a VPS. Key topics include port 25 unblocking with hosting providers, reverse DNS setup, assembling DKIM public keys for DNS TXT records, merging SPF records, and using tools like Mail Tester and EasyDMARC to verify deliverability. The guide also addresses sender reputation building and patience required for new servers to gain trust. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Self-Hosting Email Like It’s 1984](https://daily.dev/posts/self-hosting-email-like-it-s-1984-oq8tllvat) · Hacker News · 0 upvotes · 0 comments - [Self-hosting email the hard way from your own routable IPv4 block up](https://daily.dev/posts/self-hosting-email-the-hard-way-from-your-own-routable-ipv4-block-up-wjyagn4e7) · Lobsters · 0 upvotes · 0 comments - [Running mail at home without sending mail from home](https://daily.dev/posts/running-mail-at-home-without-sending-mail-from-home-qiv8oln1d) · /dev/io · 5 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security) [View this post on daily.dev](https://daily.dev/posts/how-to-host-your-own-email-server-vvcy0qptr)