Stop relay_domains matching subdomains, refresh positive verify cache hourly
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@@ -13,6 +13,8 @@ message_size_limit = 52428800
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mynetworks = cidr:/etc/postfix/mynetworks.cidr
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relay_domains = texthash:/etc/postfix/relay_domains
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# Default minus relay_domains: subdomains are not delivered and would loop back out via the gateways.
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parent_domain_matches_subdomains = debug_peer_list,fast_flush_domains,mynetworks,permit_mx_backup_networks,qmqpd_authorized_clients,smtpd_access_maps
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transport_maps = texthash:/etc/postfix/transport
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relayhost = [mta1.edge.unkin.net]:25
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smtp_fallback_relay = [mta2.edge.unkin.net]:25
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@@ -25,6 +27,8 @@ unverified_recipient_reject_code = 550
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unverified_recipient_tempfail_action = defer_if_permit
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address_verify_negative_refresh_time = 5m
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address_verify_negative_expire_time = 1h
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address_verify_positive_refresh_time = 1h
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address_verify_positive_expire_time = 1d
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milter_default_action = tempfail
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smtpd_milters =
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