On 27.01.25 14:20, Marko Cupać via Postfix-users wrote:
with my current configuration (relevant part):
smtpd_client_restrictions =
check_client_access hash:$config_directory/client_access
smtpd_data_restrictions = reject_unauth_pipelining
smtpd_helo_required = yes
smtpd_relay_restrictions =
reject_non_fqdn_recipient
reject_non_fqdn_sender
reject_unknown_sender_domain
reject_unknown_recipient_domain
check_sender_access regexp:$config_directory/tagfordkimsign
permit_mynetworks
reject_unauth_destination
reject_multi_recipient_bounce
reject_non_fqdn_helo_hostname
reject_invalid_helo_hostname
check_sender_access hash:$config_directory/sender_access
reject_unknown_client_hostname
reject_rbl_client zen.spamhaus.org
reject_rbl_client bl.spamcop.net
reject_rhsbl_reverse_client dbl.spamhaus.org
reject_rhsbl_helo dbl.spamhaus.org
reject_rhsbl_sender dbl.spamhaus.org
check_policy_service inet:127.0.2.12:10023
check_sender_access regexp:$config_directory/tagfordirectsend
permit
... Microsoft's servers are frequently being (temporarily) blocked by
spamcop:
Jan 27 10:47:20 mx1 postfix/smtpd[67827]: NOQUEUE: reject: RCPT from
mail-db8eur05on2106.outbound.protection.outlook.com[40.107.20.106]: 554 5.7.1 Service
unavailable; Client host [40.107.20.106] blocked using bl.spamcop.net; Blocked - see
https://www.spamcop.net/bl.shtml?40.107.20.106; from=<sen...@example.org>
to=<recipi...@example.org> proto=ESMTP
helo=<EUR05-DB8-obe.outbound.protection.outlook.com>
Is there a way to override rbl block for particular domains? Would
adding 'example.org OK' to sender_access (above rbl blocks, as in my
config) be appropriate action?
yes.
Would rbl_reply_maps be better solution? I tried to understand it and
find some configuration examples but failed.
don't play with rbl_reply_maps unless you really know what you're doing.
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