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[Penguin Infotech]

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Hi experts there !, Nayaz here from Penguin-Infotech, here is my simple 
query which i couldn't resolve need help from experts

this is my first mail to mailman/rh-network i have rhel 5.4 intalled for 
MTA (postfix-2.3.3-2.x86_64 )
I have a /etc/postfix/aliases directory where i keep aliases files 
containing n number of users id, and i have added aliase entry in 
/etc/aliases file to include these files.

and now i want to allow access to these aliases file to be accessed for 
a group of users only to be used when addressing for users.

This is how i have done to resolve it so far.

step 1:
created a file in /etc/postfix/aliases/engineers-users, then added users 
id who can use it as
user1 at xyz.com        OK
user2 at xyz.com        OK

step2:
added entry's to main.cf file as
smtpd_restriction_classes = engineers-acl
engineers-acl = check_sender_access hash:/etc/postfix/engineers-users, 
reject

smtpd_sender_restrictions = check_sender_access 
hash:/etc/postfix/engineers-users

step3:
added restriction file under /ec/postfix/restricted-users  to use the acl as
engineers at xyz.com        engineers-acl

step4:
/etc/aliases file contains as
engineers  : :include:/etc/postfix/aliases/engineers-users

(command excecuted whereever necessary as postmap, postalias, restart)

my requirement:
i have thousands of users upon which i need to allow only a top level of 
users to uses this aliases as address,
the permitted users shal only match from /etc/postfix/engineers-users file.

Say for example user1 at xyz.com can address engineers at xyz.com.

need reply asap

-- 
Thanks&  Regards
Shaik Nayaz
Technical Support Engineer
Penguin Infotech Support
Contact +91-9880084816
Penguin Infotech Ind Pvt Ltd
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