More than 2 address in a mailing-list --> 451 4.3.5 Server configuration error !

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pm9292
Posts: 1
Joined: Tue Apr 25, 2023 2:27 pm

More than 2 address in a mailing-list --> 451 4.3.5 Server configuration error !

Post by pm9292 »

Hi,

I'm having trouble using a mailing-list if there is more than 1 address in it (which kind of loses its utility..)

Cant't find a useful answer looking around.
Thank you really for any useful hints !

Regards.
PM.

Here the info in zimbra.log:
May 9 19:07:29 zimbra postfix/smtpd[1861460]: Anonymous TLS connection established from mail-pr2fra01on2085.outbound.protection.outlook.com[40.107.12.85]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 9 19:07:29 zimbra postfix/smtpd[1861460]: NOQUEUE: filter: RCPT from mail-pr2fra01on2085.outbound.protection.outlook.com[40.107.12.85]: <xx@xx.com>: Sender address triggers FILTER smtp-amavis:[127.0.0.1]:10026; from=<xx@xx.com> to=<maillist1@dom.com> proto=ESMTP helo=<FRA01-PR2-obe.outbound.protection.outlook.com>
May 9 19:07:29 zimbra postfix/smtpd[1861460]: warning: permit_tls_clientcerts is requested, but "smtpd_tls_ask_ccert = no"
May 9 19:07:29 zimbra postfix/smtpd[1861460]: NOQUEUE: filter: RCPT from mail-pr2fra01on2085.outbound.protection.outlook.com[40.107.12.85]: <xx@xx.com>: Sender address triggers FILTER smtp-amavis:[127.0.0.1]:10024; from=<xx@xx.com> to=<maillist1@dom.com> proto=ESMTP helo=<FRA01-PR2-obe.outbound.protection.outlook.com>
May 9 19:07:29 zimbra postfix/smtpd[1861460]: warning: unknown smtpd restriction: "OK"
May 9 19:07:29 zimbra postfix/smtpd[1861460]: NOQUEUE: reject: RCPT from mail-pr2fra01on2085.outbound.protection.outlook.com[40.107.12.85]: 451 4.3.5 Server configuration error; from=<xx@xx.com> to=<maillist1@dom.com> proto=ESMTP helo=<FRA01-PR2-obe.outbound.protection.outlook.com>
$ zmcontrol -v
Release 8.8.15_GA_3953.RHEL8_64_20200629025823 RHEL8_64 FOSS edition, Patch 8.8.15_P37.
$ zmprov gs `zmhostname` zimbraMtaRestriction zimbraMtaSmtpdClientRestrictions zimbraMtaSmtpdDataRestrictions zimbraMtaSmtpdSenderRestrictions
# name zimbra.dom.com
zimbraMtaRestriction: check_recipient_access ldap:/opt/zimbra/conf/ldap-splitdomain.cf
zimbraMtaRestriction: reject_invalid_helo_hostname
zimbraMtaRestriction: reject_non_fqdn_sender
zimbraMtaRestriction: check_reverse_client_hostname_access pcre:/opt/zimbra/conf/fqrdns.pcre
zimbraMtaSmtpdClientRestrictions: reject_unauth_pipelining
zimbraMtaSmtpdDataRestrictions: reject_unauth_pipelining

/opt/zimbra/conf/ldap-splitdomain.cf:
server_host = ldap://zimbra.dom.com:389
server_port = 389
search_base =
query_filter = (&(|(zimbraMailDeliveryAddress=%s)(zimbraMailAlias=%s)(zimbraMailCatchAllAddress=%s))(zimbraMailStatus=enabled))
result_attribute = zimbraMailDeliveryAddress,zimbraMailForwardingAddress,zimbraPrefMailForwardingAddress
result_filter = OK
version = 3
start_tls = yes
tls_ca_cert_dir = /opt/zimbra/conf/ca
bind = yes
bind_dn = uid=zmpostfix,cn=appaccts,cn=zimbra
bind_pw = *****
timeout = 30
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