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Old 06-13-2016, 10:11 AM   #1
LQ Newbie
Registered: Jun 2016
Posts: 3

Rep: Reputation: Disabled
login without authorization - Postfix/SASL

I have a problem with logging without authentication on the port SMTPS (465) postfix, because
because security is not working
In configuration I have:

smtps     inet  n       -      n       -       1       postscreen
 -o smtpd_tls_wrappermode=yes
 -o smtpd_sasl_auth_enable=yes
 -o content_filter=smtps
 -o smtpd_client_restrictions=permit_sasl_authenticated,reject
 -o smtpd_sender_restrictions=reject_unknown_sender_domain,permit_sasl_authenticated
 -o smtpd_recipient_restrictions=permit_sasl_authenticated
 -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
On port 25 and 587 is OK, ie. not logged without authorization, in my configurations have:

smtp      inet  n       -       -       -       -       smtpd
 -o smtpd_client_restrictions=permit_sasl_authenticated,reject_unauth_destination
 -o smtpd_sender_restrictions=reject_unknown_sender_domain,permit_sasl_authenticated,reject
 -o smtpd_sasl_auth_enable=yes
 -o smtpd_recipient_restrictions=permit_sasl_authenticated
 -o smtpd_tls_security_level=encrypt
Does anyone know how to just block port 465?
any ideas?
Old 06-28-2016, 07:30 PM   #2
Registered: May 2016
Location: Aachen
Distribution: Debian, CentOS, Ubuntu, Raspian, tinycore
Posts: 59

Rep: Reputation: Disabled
Uh - blocking 465 is rather easy: simply comment out (write # as the first letter in the rows) for the smtps ... part
The "smtps" -> 465 mapping comes from the file /etc/services - take a look.


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