I-D ACTION:draft-gahrns-imap-referrals-00.txt

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       Title     : IMAP4 Referrals                                         
       Author(s) : M. Gahrns
       Filename  : draft-gahrns-imap-referrals-00.txt
       Pages     : 7
       Date      : 01/30/1997

When dealing with large amounts of users, messages and geographically 
dispersed IMAP4 [RFC-2060] servers, it may be desirable to distribute 
messages and users amongst different servers within an organization.  For 
example, an IMAP4 server may choose to store user's private mailboxes 
locally, while shared mailboxes are stored remotely on another server.  
This may be required if it is uneconomical to replicate all shared 
mailboxes to the user's local server, due to limited bandwidth or disk 
resources.                                            
                     
Using a referral mechanism, an IMAP4 client is able to determine the home 
server of a user, by examining the referral response code at connection 
startup or in response to a LOGIN or AUTHENTICATE command. By knowing the 
name of any IMAP4 server in the organization, a user can be transparently 
connected to their home IMAP4 server.  This greatly facilitates the ability
of an administrator to transparently move users between IMAP4 servers for 
reasons such as hardware failures or organizational changes.               

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ftp://ds.internic.net/internet-drafts/draft-gahrns-imap-referrals-00.txt"><ftp://ds.internic.net/internet-drafts/draft-gahrns-imap-referrals-00.txt>