This is the message: [code] postfix/postscreen[30598]: warning: cidr map /opt/postfix/conf/custom_postscreen_whitelist.cidr, line 5: non-null host address bits in "192.168.68.0/16", perhaps you should use "192.168.0.0/16" instead: skipping this rule [/code] This is what is in the file: [code] # Autogenerated by mailcow # Rules are evaluated in the order as specified. # Blacklist 192.168.* except 192.168.0.1. 192.168.68.1 permit 192.168.68.0/16 reject [/code] This is my local lan network

confused about postfix message I am getting

maybl8

This is the message:

postfix/postscreen[30598]: warning: cidr map /opt/postfix/conf/custom_postscreen_whitelist.cidr, line 5: non-null host address bits in "192.168.68.0/16", perhaps you should use "192.168.0.0/16" instead: skipping this rule

This is what is in the file:

# Autogenerated by mailcow
# Rules are evaluated in the order as specified.
# Blacklist 192.168.* except 192.168.0.1.
192.168.68.1          permit
192.168.68.0/16       reject

This is my local lan network

DocFraggle

maybl8 192.168.68.0/16

Did you enter this yourself? This is indeed wrong, use either

192.168.68.0/24

192.168.0.0/16

maybl8

DocFraggle
I don’t remember. It was a while ago I installed this. If I did it manually I did it from some instructions I was following . I will correct it. Thanks

So what is this actually doing because my mailcow seems to be working fine even tho this is wrong.

Now I see this. It could have been there before and I didn’t notice it.

postfix-mailcow-1  | chown: cannot access '/usr/share/man/man1/mailq.1.gz': No such file or directory
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 92: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,?reject_rbl_client zen.spamhaus.org=127.0.0.[2..11]
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 92: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,?reject_rbl_client zen.spamhaus.org=127.0.0.[2..11]
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 92: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,?reject_rbl_client zen.spamhaus.org=127.0.0.[2..11]
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 92: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,?reject_rbl_client zen.spamhaus.org=127.0.0.[2..11]
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | /usr/sbin/postconf: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination
postfix-mailcow-1  | postsuper: warning: /opt/postfix/conf/main.cf, line 211: overriding earlier entry: smtpd_recipient_restrictions=check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,  permit_sasl_authenticated,  permit_mynetworks,  check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,  reject_invalid_helo_hostname,  reject_unauth_destination