Restrict sending external mail depending on LDAP attribute

10 msg	postfix relaying

Restrict sending external mail depending on LDA...
\ Juan Asensio Sánchez (16 May 2007)
. \ Magnus Bäck (17 May 2007)

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Subject:	Restrict sending external mail depending on LDAP attribute
Group:	Postfix-users
From:	Juan Asensio Sánchez
Date:	16 May 2007

Hi

I am trying to integrate Postfix to work with Gosa
(http://www.gosa-project.org) using this manual
http://jriosgosa.blogspot.com. I have yet configured Postfix so local
and remote mails are delivered correctly, and i can see mails using
courier imap. Each LDAP user has an attribute called
gosaMailDeliveryMode. This field is a combination of some letters:
[L], [IL], [ILV], etc. L means that the user can receive mail; I means
that the user can send mails only to local domains; and V means that
when the user receives an email, a message will be sent to the sender
with a vacation message. Fields L y V are configured and works fine,
although i don't understand very well how does postfix work. I have
ony to check if that field contains an "I", so when the flag is
present, i must check if the recipient is local (contained in some
local domain), and then send it; if not, i must reject the message
sending to the sender an error message. I know is a "bit" complicated.
Has anyone made this? Is there any other way?

Attached are the configuration files.

Thank you for the patience.