[CentOS] Large scale Postfix/Cyrus email system for 100,000+ users

Christopher Chan wrote:
> 
>> I thought the usual ways of doing this were to either use a 
>> high-performance NFS server (netapp filer...) and maildir format so 
>> you can run imap from any client facing server, or to keep the 
>> delivery host information in an LDAP attribute that you find when 
>> validating the address.
>>
> 
> This is the 'I have the money' way of doing this ;-)

There are at least 2 free ldap servers.  Or if you are stuck with mysql 
you can probably add your own field for delivery host.

Does anyone have enough faith in a free NFS server to use it in this 
scenaro these days?   How about opensolaris on top of zfs?

-- 
   Les Mikesell
    lesmikesell at gmail.com