70 lines
2.6 KiB
Markdown
70 lines
2.6 KiB
Markdown
# mail-server
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Docker Compose mail stack for `mail.produktor.io` on arc-01, based on
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[docker-mailserver](https://docker-mailserver.github.io/docker-mailserver/) (DMS).
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| Service | Container | Ports |
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|---------|-----------|-------|
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| Mail server (DMS) | `mailserver` | 25 (SMTP), 465 (SMTPS), 587 (Submission STARTTLS), 143 (IMAP STARTTLS), 993 (IMAPS) |
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| Webmail (Roundcube) | `webmail` | 127.0.0.1:19944 / 172.17.0.1:19944 (HTTP, behind NPM) |
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| Account admin | — (removed) | — |
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## Accounts
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Source of truth is file-based: `config/postfix-accounts.cf` (SHA512-CRYPT
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hashes). Current mailboxes:
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- `info@produktor.io`
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- `andriy.oblivantsev@produktor.io`
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- `ano@produktor.io`
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- `postmaster@produktor.io`
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- `postman@produktor.io`
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Passwords live in `.env` (`INFO_PASSWORD`, `ANDRIY_PASSWORD`; `ano@` uses
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`GATOR_MAIL_PASS` in the gator repo `.env`). Do not commit `.env`.
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## Web UI (Roundcube)
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Webmail runs as the `webmail` service (official `roundcube/roundcubemail`
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image) and is reachable at **https://mail.produktor.io** (alias
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**https://webmail.produktor.io**) via Nginx Proxy Manager (proxy host 66 →
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`172.17.0.1:19944`, Let's Encrypt).
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Login: any mailbox address from the table above + its real password. The UI
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shows one mailbox per login; to see all accounts, log in with each one. The
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account list is the `postfix-accounts.cf` file (see Accounts).
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Connection details used by the webmail (IMAP/SMTP):
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- IMAP: `mail.produktor.io:143` STARTTLS (or `:993` SSL)
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- SMTP submission: `mail.produktor.io:587` STARTTLS, AUTH required
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Host note: the webmail must connect to the DMS container via the FQDN
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`mail.produktor.io` (Docker embedded DNS resolves it to the `mailserver`
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container inside the compose network). Connecting to the bare container alias
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`mailserver` fails TLS peer-name verification, because the DMS certificate is
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issued for `mail.produktor.io`.
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### Manage
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```bash
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docker compose up -d # start mailserver + webmail
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docker compose logs -f webmail # webmail logs
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docker exec webmail sh # shell into webmail
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```
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The webmail stores its sqlite database (addressbook, settings) in
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`data/roundcube/db/`. `ROUNDCUBEMAIL_DES_KEY` (session encryption) must be set
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in `.env` — compose fails without it.
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## Reverse proxy (NPM)
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`mail.produktor.io` is a proxy host in Nginx Proxy Manager (`provider` container,
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see the `gitea` repo): forward `http://172.17.0.1:19944`, Let's Encrypt cert
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(SAN: `mail.produktor.io`, `webmail.produktor.io`), SSL forced, HTTP/2.
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## TLS
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DMS uses a Let's Encrypt certificate for `mail.produktor.io` mounted from
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`tls/letsencrypt/mail.produktor.io/` (`SSL_TYPE=letsencrypt`).
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