Postfix docker container based on Alpine Linux (from Mailu/postfix)
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# General
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# Main domain and hostname
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mydomain = {{ DOMAIN }}
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myhostname = {{ HOSTNAME }}
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myorigin = $mydomain
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# Message size limit
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message_size_limit = {{ MESSAGE_SIZE_LIMIT }}
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# Relayed networks
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mynetworks = 127.0.0.1/32 [::1]/128 {{ RELAYNETS }}
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# Empty alias list to override the configuration variable and disable NIS
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alias_maps =
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# Only accept virtual emails
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mydestination =
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# Relayhost if any is configured
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relayhost = {{ RELAYHOST }}
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###############
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# Restrictions
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###############
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# Delay all rejects until all information can be logged
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smtpd_delay_reject = yes
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# Allowed senders are: the user or one of the alias destinations
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smtpd_sender_login_maps = $virtual_alias_maps
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# Helo restrictions are specified for smtp only in master.cf
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smtpd_helo_required = yes
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# Sender restrictions
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smtpd_sender_restrictions =
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permit_mynetworks,
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reject_non_fqdn_sender,
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reject_unknown_sender_domain,
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reject_unlisted_sender,
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reject_sender_login_mismatch,
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permit
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# Recipient restrictions:
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smtpd_recipient_restrictions =
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reject_unauth_pipelining,
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reject_non_fqdn_recipient,
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reject_unknown_recipient_domain,
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permit_mynetworks,
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permit
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###############
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# Extra Settings
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###############
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maillog_file = /dev/stdout
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