aports/config/postfix/main.cf

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compatibility_level = 2
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# General
smtpd_banner = $myhostname ESMTP RedXen Mail. DO NOT MESS WITH US OR WE WILL CUT YOUR BALLS OFF!
mail_name = RedXen Mail Postfix
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inet_interfaces = all
inet_protocols = all
myorigin = redxen.eu
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myhostname = mail.$myorigin
mydomain = $myorigin
mydestination = $myorigin
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mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 [0200::]/7
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relayhost =
relay_domains = $mydestination
local_transport = local
alias_maps = proxy:pgsql:/etc/redxen/postfix/pgsql-aliases.cf
smtpd_sender_login_maps = proxy:pgsql:/etc/redxen/postfix/pgsql-users.cf
local_recipient_maps = $smtpd_sender_login_maps $alias_maps
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biff = no
append_dot_mydomain = no
delay_warning_time = 1h
readme_directory = no
mailbox_size_limit = 0
recipient_delimiter = +
notify_classes = resource, software, bounce
smtpd_helo_required = yes
smtpd_delay_reject = yes
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# SMTP TLS
smtp_tls_CApath = /etc/ssl/certs
smtp_tls_security_level = may
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smtp_tls_note_starttls_offer = yes
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smtpd_use_tls = yes
smtpd_tls_cert_file = /etc/redxen/letsencrypt/chain.crt
smtpd_tls_key_file = /etc/redxen/letsencrypt/private.key
smtpd_tls_security_level = may
smtpd_tls_protocols = !SSLv2, !SSLv3
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# Restrictions
smtpd_sender_restrictions = permit_sasl_authenticated,
check_sender_access inline:{{$myorigin=553 not logged in}},
reject_unknown_sender_domain
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smtpd_relay_restrictions = permit_sasl_authenticated,
reject_unauth_destination
smtpd_recipient_restrictions = permit_sasl_authenticated,
reject_non_fqdn_recipient,
reject_unknown_recipient_domain,
reject_unknown_reverse_client_hostname,
reject_unverified_recipient
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smtpd_data_restrictions = reject_unauth_pipelining
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smtpd_helo_restrictions = reject_invalid_helo_hostname
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# Dovecot auth
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smtpd_sasl_auth_enable = yes
smtpd_sasl_type = dovecot
smtpd_sasl_path = /run/dovecot/auth
smtpd_sasl_security_options = noanonymous
smtpd_sasl_local_domain = $myorigin
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# Dovecot LMTP
mailbox_transport = lmtp:unix:/run/dovecot/lmtp
# OpenDKIM & RSpamD
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milter_protocol = 6
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milter_default_action = tempfail
internal_mail_filter_classes =
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smtpd_milters = inet:rspamd.routinginfo.internal:7510 $non_smtpd_milters
non_smtpd_milters = inet:opendkim.routinginfo.internal:7514