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123 lines
3.8 KiB
Markdown
123 lines
3.8 KiB
Markdown
# docker-mailserver
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[](https://travis-ci.org/tomav/docker-mailserver)
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A fullstack but simple mail server (smtp, imap, antispam, antivirus...).
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Only configuration files, no SQL database. Keep it simple and versioned.
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Easy to deploy and upgrade.
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Includes:
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- postfix with smtp auth
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- courier-imap with ssl support
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- amavis
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- spamassasin
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- clamav with automatic updates
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Why I created this image: [Simple mail server with Docker](http://tvi.al/simple-mail-server-with-docker/)
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## informations:
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- only config files, no *sql database required
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- mails are stored in `/var/mail/${domain}/${username}`
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- you should use a data volume container for `/var/mail` for data persistence
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- email login are full email address (`username1@my-domain.com`)
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- user accounts are managed in `./postfix/accounts.cf`
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- aliases and fowards/redirects are managed in `./postfix/virtual`
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- antispam rules are managed in `./spamassassin/rules.cf`
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- files must be mounted to `/tmp` in your container (see `docker-compose.yml` template)
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- ssl is strongly recommended, you can provide a self-signed certificate, see below
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## installation
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docker pull tvial/docker-mailserver
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## build
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docker build -t tvial/docker-mailserver .
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## run
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docker run --name mail -v "$(pwd)/postfix":/tmp/postfix -v "$(pwd)/spamassassin":/tmp/spamassassin -p "25:25" -p "143:143" -p "587:587" -p "993:993" -h mail.my-domain.com -t tvial/docker-mailserver
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## docker-compose template (recommended)
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mail:
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# image: tvial/docker-mailserver
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build: .
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hostname: mail
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domainname: my-domain.com
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ports:
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- "25:25"
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- "143:143"
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- "587:587"
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- "993:993"
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volumes:
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- ./spamassassin:/tmp/spamassassin/
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- ./postfix:/tmp/postfix/
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Volumes allow to:
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- Insert custom antispam rules
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- Manage mail users, passwords and aliases
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- Manage SSL certificates
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# usage
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docker-compose up -d mail
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# configure ssl
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## generate self-signed ssl certificate
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You can easily generate a self-signed SSL certificate by using the following command:
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docker run -ti --rm -v "$(pwd)"/postfix/ssl:/ssl -h mail.my-domain.com -t tvial/docker-mailserver generate-ssl-certificate
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# Press enter
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# Enter a password when needed
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# Fill information like Country, Organisation name
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# Fill "mail.my-domain.com" as FQDN
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# Don't fill extras
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# Enter same password when needed
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# Sign the certificate? [y/n]:y
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# 1 out of 1 certificate requests certified, commit? [y/n]y
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# will generate:
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# postfix/ssl/mail.my-domain.com-key.pem (used in postfix)
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# postfix/ssl/mail.my-domain.com-req.pem (only used to generate other files)
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# postfix/ssl/mail.my-domain.com-cert.pem (used in postfix)
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# postfix/ssl/mail.my-domain.com-combined.pem (used in courier)
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# postfix/ssl/demoCA/cacert.pem (certificate authority)
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Note that the certificate will be generate for the container `fqdn`, that is passed as `-h` argument.
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## configure ssl certificate (convention over configuration)
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If a matching certificate (files listed above) is found in `postfix/ssl`, it will be automatically setup in postfix and courier-imap-ssl. You just have to place them in `postfix/ssl` folder.
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# client configuration
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# imap
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username: <username1@my-domain.com>
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password: <username1password>
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server: <your-server-ip-or-hostname>
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imap port: 143 or 993 with ssl (recommended)
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imap path prefix: INBOX
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auth method: md5 challenge-response
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# smtp
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smtp port: 25 or 587 with ssl (recommended)
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username: <username1@my-domain.com>
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password: <username1password>
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auth method: md5 challenge-response
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# todo
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Things to do or to improve are stored on [Github](https://github.com/tomav/docker-mailserver/issues), some open by myself.
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Feel free to improve this docker image.
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# wanna help?
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Fork, improve and PR. ;-)
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