Hi Pedro,
The docs state that virtual mailbox, need some extra suff set up,
namely virtual_mailbox_base.
How would this help with several backends?
I can't define several cyrus backends, can I?
And how exaclty does virtual_mailbox help in this scenario, since mail
must be routed to the appropriate backend, which might be in another
server, and for what I see in the docs, the virtual_mailbox requires
the physical paths to the mailboxes, correct?
Depends on the config. You can make postfix deliver it to mbox files (I
think that's the default), however, you can make it do anything else
that can be a transport - just override it by virtual_transport
http://www.postfix.org/postconf.5.html#virtual_transport
I would define a transport table (e.g. use a SQL lookup and have a
transport field for every address), pointing to lmtp:<backend>, that
should do the job; I'm not sure about what happens to address
extensions, though.
And will an address like username@xxxxxxxxxx@backend be routed
correctly with virtual_mailboxes?
From your other mail:
On 13.06.2006, at 20:22, Pedro Algarvio wrote:
We would like to keep using postfix'es
virtual_alias_domains/virtual_alias_maps which is the way the system
is setup right now, which correctly routes the mail *if* virtdomains
is set to off and the user's mailboxes are in the form of
username_domain_tld, and the routing address is
username_domain_tld@backend.
I'm not quite sure about the details you have, but you can mix
virtual_alias_maps and virtual_mailbox_maps at will. If you mix that
with a transport table, the latter will have precedence over the
virtual_mapbox_map conserning the transport (you could have
virtual_mailbox_transport=lmtp:<some lmtp proxy> and then override it
for some mailboxes). What I'm not sure about is whether alias rewriting
will take place in case you have an transport specified, you'd have to
have a look at the postfix docs for that.
Hope that helps,
Baltasar
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