[imp] Horde/IMP and mail clusters

[robert sand]

At the University of Minnesota Duluth we use imp authtentication via imap to a set of servers running perdition.  The 
perdition box then determines which server the user resides on and makes an imap connection.

Tobias Drewry wrote:
> BOn Fri, 8 Feb 2008, Tim Bannister wrote:
> 
>>> I have successfully setup two qmail-ldap servers with its native
>>> qmail-ldap clustering support. Using the mailHost (ldap) attribute, I
>>> am able to send mail to someone and that mail will be correctly
>>> delivered to the correct host as specified in mailHost. So, half of my
>>> users will have their mails in server-A and the other half in
>>> server-B. Both mail servers have IMAP and running fine. All user
>>> accounts are stored in server-A.
>>>
>>> I have a third server (server-C) that I will use to run IMP (and some
>>> web pages). How do I configure IMP so that it will know from which
>>> server to get a particular mail from, for a particular user ? Can I do
>>> this without any extra hardware?
>> You can also write a preauthenticate hook that sets the IMAP server to
>> the host on which their mail is stored.
>>
>> -- 
>> Tim Bannister
> 
> At Boston University we do both.  We use preauthentication checking to 
> determine which of the 10 mail servers someone's account lives on and 
> reconfigure IMP dynamically to reflect the server involved.  Failing that 
> we have an IMAP-Proxy which should route them to the right place, albeit 
> with a few more hops.  The IMAP-Proxy is really there to handle external 
> IMAP connections for our clients.
> 
> --
> Tobias Drewry
> Boston University
> 

-- 
Robert Sand.
mailto:rsand at d.umn.edu
1028 Kirby Drive
366 K Plz
Duluth, MN 55812-3095
218-726-6122        fax 218-726-7674

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