103 lines
2.2 KiB
Markdown
103 lines
2.2 KiB
Markdown
[Postfix](http://www.postfix.org/) with dovecot authentication and [spamassassin](http://spamassassin.apache.org/) + [OpenDKIM](http://www.opendkim.org/) in postgres.
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# Volumes
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- `/etc/ssl/mail:ro`: certificates have to be here.
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# Environment Variables
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## MYHOSTNAME
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Fully qualified hostname.
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## MYDOMAIN
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The internet domain name of the mail system.
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## SMTP_BANNER
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Text prepended to `$myhostname ESMTP $mail_name` for the smtp banner.
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## SPAMASSASSIN_HOST
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Hostname for the spamassassin host.
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## DOVECOT_HOST
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Hostname for the dovecot host.
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## DOVECOT_AUTH_PORT
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Port for the dovecot host.
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## DKIM_HOST
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Hostname for the OpenDkim host.
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## DKIM_PORT
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Port for the OpenDkim host.
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## LMTP_HOST
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Hostname for the lmtp host (probably dovecot).
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## LMTP_PORT
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Port for the lmtp host.
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## CERT_DOMAIN
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Name of the certificate domain.
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Name of the key file.
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## DB_HOST
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Postgre database host.
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## DB_USER
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- default: email
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User to connect to the database.
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## DB_PASSWORD
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Password to use for the database user.
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## DB_NAME
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- default: email
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Name of the postgre database to connect to.
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## MESSAGE_SIZELIMIT
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- default: 20000000
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Message size limit in bytes.
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## MAILBOX_SIZELIMIT
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- default: 0
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Mailbox size limit in bytes. `0` disables the limit.
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## TLS_SECURITY_LEVEL
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- default: may
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One of:
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- none: TLS will not be used.
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- may: Opportunistic TLS: announce STARTTLS support to remote SMTP clients, but do not require that clients use TLS encryption.
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- encrypt: Mandatory TLS encryption: announce STARTTLS support to remote SMTP clients, and require that clients use TLS encryption.
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According to [RFC 2487](http://tools.ietf.org/html/rfc2487) this MUST NOT be applied in case of a publicly-referenced SMTP server.
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## TLS_PROTOCOLS
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- default: !SSLv2, !SSLv3, !TLSv1, !TLSv1.1
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Comma seperated list of accepted TLS protocols.
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## TLS_CIPHERS
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- default: high
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The minimum TLS cipher grade that the Postfix SMTP server will use with opportunistic TLS encryption.
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## TLS_EXCLUDE_CIPHERS
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- default: aNULL, MD5, 3DES
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Comma seperated list of ciphers or cipher types to exclude from the SMTP server cipher list at all TLS security levels.
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# Ports
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- 25
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- 587
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# Capabilities
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- DAC_OVERRIDE
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- NET_BIND_SERVICE
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- SETGID
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- SETUID
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