128 lines
2.7 KiB
Markdown
128 lines
2.7 KiB
Markdown
[Postfix](http://www.postfix.org/) with ldap authentication and [spamassassin](http://spamassassin.apache.org/) + [OpenDKIM](http://www.opendkim.org/) in ldap.
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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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### 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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### LDAP_URI
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Complete uri for the authentication ldap host.
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### LDAP_BIND_DN
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DN used to authenticate against ldap.
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### LDAP_BIND_PASSWORD
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Password used to authenticate against ldap.
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### LDAP_ALIAS_QUERY_FILTER
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Ldap filter for mail aliases.
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### LDAP_DOMAIN_QUERY_FILTER
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Ldap filter for domains.
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### LDAP_MAILBOX_QUERY_FILTER
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Ldap filter for mailboxes.
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### LDAP_MAILBOX_SEARCH_BASE
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Base DN to look for mailboxes on the ldap host.
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### LDAP_DOMAIN_SEARCH_BASE
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Base DN to look for valid domains on the ldap host.
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### LDAP_DOMAIN_RESULT_ATTRIBUTE
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- default: dc
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Ldap attribute that is fetched in the domain query.
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### LDAP_MAILBOX_RESULT_ATTRIBUTE
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- default: cn
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Ldap attribute that is fetched in the mailbox query.
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### LDAP_STARTTLS
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- default: yes
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Whether to use tls when connecting to the ldap host.
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### CERTNAME
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- default: fullchain.pem
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Name of the certificate file.
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### Keyname
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- default: privkey.pem
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Name of the key file.
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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
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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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- CHOWN
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- DAC_OVERRIDE
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- FOWNER
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- NET_BIND_SERVICE
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- SETGID
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- SETUID
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