Cyrus MURDER - Frontend server configuration options

[Etienne Goyer]

Michael Halligan wrote:
> I'm interested in the aggregator too.. What I'd really like to know is
> if I can use Courier as a back-end.. I have several thousand mail
> boxes, and converting from Maildir just isn't an option, but I'm
> finding a strong lack of imap proxy software out there.

You can't.  First, the backend must register their mailbox list with the 
MUPDATE master server via the MUPDATE protocol, which only Cyrus 
support.  Second, mailbox operations (creation, deletion, rename, etc) 
on backend must first be reserved via the MUPDATE protocol too.  Third, 
your backend servers must support proxy authentication (ie SASL 
DIGEST-MD5 mechanism) to receive connection from the frontends, which 
Courier does not support AFAIK.

Theorically, it is possible to have a Murder with various IMAP 
implementation as long as every node support the MUPDATE protocol.  At 
this point though, only Cyrus implement it.
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