[ubuntu-in] Help 4 postfix

[0oo_Neo_oo0 I m W0T I m]

Dear all

Any budy can tell me how can i configure POSTFIX server with 20 domains... 

Actully My organization is like umbrella so many sub companies are there.. Now what happen around 20 domain's i want to configure in single mail server right now I m using Mdeamon 10.0.0 but what happened after 5 to 10 days my IP got black listed b'coz of 20 domain's are hosted on 3 different vendors. So I discouse with my friend he told me that b'coz of that different vendors it got black listed.

Mdeamon 10.0.0 can relay mails with primary domain and thats b'coz extra domain at different vendors its consider in black list. So simply i want to configure POSTFIX as a smtp relay server or ubuntu mail server.


I DO NOT KNOW WHAT WHAT THING ARE REQUIRED FOR THAT..

one more thing I do not have right to change the MX recored b'coz management not allowing me to do that. 
So only two possibility are there either Mdeamon is for mail collections and for relay ubuntu or if ubuntu can handled 20 domain's and again administration is should be easy for admin staff... Like archiving mails or take back up of  mails and back up for .conf files.


THANKS IN ADVANCE 

RAVI SHUKLA
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