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Use sender verification instead of recipient verification, limit connections
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This commit is contained in:
Deon George 2025-04-25 16:06:55 +10:00
parent 443d18025d
commit 94514235cd
1 changed files with 2 additions and 2 deletions
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4
include/01-custom.cf
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@ -1,4 +1,5 @@
smtp_host_lookup = native,dns smtp_host_lookup = native,dns
smtpd_client_connection_rate_limit = 5
message_size_limit = 25600000 message_size_limit = 25600000
queue_minfree = 51200000 queue_minfree = 51200000
smtpd_helo_required = yes smtpd_helo_required = yes
@ -24,10 +25,9 @@ smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, rej
#reject_rhsbl_helo @SPAMHAUS_DQS_KEY@.zrd.dq.spamhaus.net=127.0.2.[2..24], #reject_rhsbl_helo @SPAMHAUS_DQS_KEY@.zrd.dq.spamhaus.net=127.0.2.[2..24],
#reject_rhsbl_reverse_client @SPAMHAUS_DQS_KEY@.zrd.dq.spamhaus.net=127.0.2.[2..24], #reject_rhsbl_reverse_client @SPAMHAUS_DQS_KEY@.zrd.dq.spamhaus.net=127.0.2.[2..24],
#reject_rbl_client @SPAMHAUS_DQS_KEY@.zen.dq.spamhaus.net=127.0.0.[2..255], #reject_rbl_client @SPAMHAUS_DQS_KEY@.zen.dq.spamhaus.net=127.0.0.[2..255],
reject_unverified_recipient,
check_policy_service unix:private/policyd-spf check_policy_service unix:private/policyd-spf
rbl_reply_maps = lmdb:/etc/postfix/custom/dnsbl-reply-map rbl_reply_maps = lmdb:/etc/postfix/custom/dnsbl-reply-map
smtpd_sender_restrictions = permit_sasl_authenticated, check_sender_access lmdb:/etc/postfix/custom/sender_access, reject_non_fqdn_sender, reject_unknown_sender_domain smtpd_sender_restrictions = permit_sasl_authenticated, check_sender_access lmdb:/etc/postfix/custom/sender_access, reject_non_fqdn_sender, reject_unknown_sender_domain, reject_unverified_sender
unverified_recipient_reject_code = 450 unverified_recipient_reject_code = 450
unverified_recipient_reject_reason = No user at this address unverified_recipient_reject_reason = No user at this address
postscreen_greet_action = enforce postscreen_greet_action = enforce