forgot to add postfix dir

pizza1/configs/postfix/body_checks.pcre

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+/^X-SimpleLogin-Client-IP:/    IGNORE

pizza1/configs/postfix/client_headers.pcre

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+/^([0-9a-f:.]+)$/ prepend X-SimpleLogin-Client-IP: $1

pizza1/configs/postfix/main.cf

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+# POSTFIX config file, adapted for SimpleLogin
+smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
+biff = no
+inet_protocols = ipv4
+# appending .domain is the MUA's job.
+append_dot_mydomain = no
+
+# Uncomment the next line to generate "delayed mail" warnings
+#delay_warning_time = 4h
+
+readme_directory = no
+
+# See http://www.postfix.org/COMPATIBILITY_README.html -- default to 2 on
+# fresh installs.
+compatibility_level = 2
+
+# TLS parameters
+smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
+smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
+smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
+smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
+smtp_tls_security_level = may
+smtpd_tls_security_level = may
+
+# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
+# information on enabling SSL in the smtp client.
+
+alias_maps = hash:/etc/aliases
+mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 10.0.0.0/24
+
+# Set your domain here
+mydestination =
+myhostname = sl.projectsegfau.lt
+mydomain = sl.projectsegfau.lt
+myorigin = sl.projectsegfau.lt
+
+relay_domains = pgsql:/etc/postfix/pgsql-relay-domains.cf
+transport_maps = pgsql:/etc/postfix/pgsql-transport-maps.cf
+
+# HELO restrictions
+smtpd_delay_reject = yes
+smtpd_helo_required = yes
+smtpd_helo_restrictions =
+    permit_mynetworks,
+    reject_non_fqdn_helo_hostname,
+    reject_invalid_helo_hostname,
+    permit
+
+# Sender restrictions:
+smtpd_sender_restrictions =
+    permit_mynetworks,
+    reject_non_fqdn_sender,
+    reject_unknown_sender_domain,
+    permit
+
+# Recipient restrictions:
+smtpd_recipient_restrictions =
+   reject_unauth_pipelining,
+   reject_non_fqdn_recipient,
+   reject_unknown_recipient_domain,
+   permit_mynetworks,
+   reject_unauth_destination,
+   permit

pizza1/configs/postfix/pgsql-relay-domains.cf

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+# postgres config
+hosts = localhost
+user = myuser
+password = mypassword
+dbname = simplelogin
+
+query = SELECT domain FROM custom_domain WHERE domain='%s' AND verified=true
+    UNION SELECT domain FROM public_domain WHERE domain='%s'
+    UNION SELECT '%s' WHERE '%s' IN ('sl.projectsegfau.lt', 'sl.psf.lt') LIMIT 1;

pizza1/configs/postfix/pgsql-transport-maps.cf

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+# postgres config
+hosts = localhost
+user = myuser
+password = mypassword
+dbname = simplelogin
+
+# forward to smtp:127.0.0.1:20381 for custom domain AND email domain
+query = SELECT 'smtp:127.0.0.1:20381' FROM custom_domain WHERE domain = '%s' AND verified=true
+    UNION SELECT 'smtp:127.0.0.1:20381' FROM public_domain WHERE domain = '%s'
+    UNION SELECT 'smtp:127.0.0.1:20381' WHERE '%s' IN ('sl.projectsegfau.lt', 'sl.psf.lt') LIMIT 1;