DBMail doesn't currently work in multiple databases at one time. Thus
you would end up with multiple instances of dbmail databases and
applications running. The LDAP authentication would allow you to have 1
central location for user/pass combos, however your users would need to
always log into the same instance of databases/apps to even see the same
content as before. Regular TCP Load balancing would be very bad. Your
users, once on a particular server, would only be able to see other
mailboxes in the same instance. There has been talk of allowing one
instance of the app to open multiple connections to different database
servers, but that is for database clustering where 1 server is the write
server, and server 2+ are read only servers.
I'm not sure if you will be having multiple companies on the same server
or not, but if so, keeping your users seperated by domain is probably
your best bet. You could then manually balance out your users by putting
3 small domains on one server and 2 medium size on another and a huge
one all by itself, etc.
Hope that helps
-Jon
WJCarpenter wrote:
I have in mind a deployment where I would provision users in a
particular MySQL instance until it gets to some capacity level that
I'm comfortable with. After that, I'd create a new MySQL instance on
another server and start provisioning users into that. Lather, rinse,
repeat.
Assuming I use a single logical LDAP directory for authentication,
groups, etc, would ACLs work correctly for sharing mailboxes? In
other words, user Alice has her mailstore in MySQL database A. User
Bob has his mailstore in MySQL database B. Can Bob grant access to a
folder to Alice and expect it to work?
(I know this *should* work. I'm just wondering if there is some
secret "gotcha" in dbmail that will sink the idea.)
Thanks.
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