Postfix smtpd_restriction_classes for Dummies - Part II
OK, another example for those of you who still don't get it:Question:
I have a customer who wants a setup where all his users can send mail to each other internally, all users will be able to receive email from the outside but only some of the users will be able to send mail outside.
Answer:
In main.cf, use:
mynetworks = 127.0.0.0/8
smtpd_restriction_classes =
may_use_external_mail,
only_internal_mail
smtpd_recipient_restrictions =
permit_mynetworks
reject_unauth_destination
check_client_access hash:/etc/postfix/policy_by_machines
# Alternative:
# check_sender_access hash:/etc/postfix/policy_by_senders
... your favourite anti spam stuff here ...
permit
may_use_external_mail =
permit
# allow ANY mail
only_internal_mail =
check_recipient_access hash:/etc/postfix/allowed_recipients
# allow internal mail
reject
in /etc/postfix/policy_by_machines:
workstation1.internal.domain may_use_external_mail workstation2.internal.domain only_internal_mail
or for the alternative, use in /etc/postfix/policy_by_senders:
user1@your.domain may_use_external_mail user2@your.domain only_internal_mail
in /etc/postfix/allowed_recipients:
your.domain OK
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© by Ralf Hildebrandt This document contains links to external information sources that I do neither monitor nor control. I explicitly disclaim any liabilities in respect to external references. You are getting this document without any guarantees. Any methods shown above are meant as demonstration and may be wrong in some place. You may damage your system if you try to follow my hints and instructions. You do this at your own risk! |
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This file was last modified 17. Jan 2007 by root