On Tue, May 19, 2009 at 06:16:01AM +0200, Luigi Rosa wrote:
> My idea is to declare the MX of the organization the headquarter of the
> organization
Not unusual.
> and route via Internet the email of other local offices to local
> servers.
Likewise.
> The only problem is that I have to manage one userlist for the
> headquarters and one userlist for each one of the local offices.
You need a *single* directory which lists the internal maildrop address
for each user.
virtual:
c.f.ga...@example.com c...@de.example.com
j.h.poinc...@example.com j...@fr.example.com
a.m.tur...@example.com a...@uk.example.com
transport:
de.example.com relay:mail.de.example.com
fr.example.com relay:mail.fr.example.com
uk.example.com relay:mail.uk.example.com
all you need after that is connectivity to reach the various site gateways
from the primary HQ gateway, possibly via secure-channel TLS "tunnels"
over the Internet:
http://www.postfix.org/TLS_README.html#client_tls_secure
http://www.postfix.org/TLS_README.html#server_access
Each regional mailstore will need to recognize the internal mailbox
addresses of users, as valid delivery addresses for each user, while
the primary address in mail headers, ... will be some....@example.com
Yes, the virtual table will need consolidated data from all the corners
of the world.
--
Viktor.
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