"Ashwin Muni" <ashwin.m...@gmail.com> wrote in message news:aanlktimqqpcmm6f89ioamsjtavtmsn3p+gxs0db0i...@mail.gmail.com... I am using exchange and want to migrate to postfix, The issue is users should be authenticated from Active Directory and other thing is i have got 1000 users from which 150 users will remain on exchange and the rest mailboxes will be created on postfix (Linux Box). the 750 users are actually not very important.
If user has mailbox in AD deliver in Ad ||=================(4)========================================== || || [ ][ ]=======(3)=<=========[ ] [ v ] (1)--> Port 25 ][ Postfix ] Authentication from AD [ Active Directory Box] ===========[ Exchange] [ ][Linux Box ]==>===(2)=========== [ ] [ ] || Else Deliver on Postfix Machine (5) || [ v ] [ Storage on Linux Box ] [ ] 1. Mail Entering Postfix machien using Port 25 2. Authentication from AD if user exists and mailbox location 3 Results from AD 4. If user on Mailbox on exchange then deliver to echange 5. Else Deliver to postfix Any help appreciated. -- Ashwin Muni http://www.linuxmaza.com Linux Tutorials and Howtos You have the option of sending all mail to Postfix. You could then use an application to pop the mail from Postfix to Exchange for the 150 users. I have seen Windows admins pop mail from a hosted mail service to Exchange on the LAN. Would this work for you? Would you be running Postfix on a LAN?