IMAP Implementation People Time Estimates

Ondrej Sury ondrej at
Thu Mar 3 08:58:54 EST 2005


it took one week for skilled unix administrators / architects to fully
evaluate, install and test Cyrus IMAPD with all the whistles and bells
(postfix, ldap, sasl, tls).


On Thu, 2005-03-03 at 11:51 +0100, Marco Colombo wrote:
> Christopher T. Beers wrote:
> > We are in the process of evaluating our current student email solution 
> > here at the University and I have been asked to develop some estimates 
> > of the time it takes to research, test and implement this.
> > 
> > The new system must support 35,000 users with about 1500 concurrent 
> > connections.  More than likely the setup will have redundant web front 
> > ends (2 servers running SquirrelMail, IMP, etc), 1 mupdate server, 2 
> > frontend machines and 2 backend Cyrus mail stores.  It will run on top 
> > of Linux (RHEL 4 probably).
> > 
> > We are familiar with UW IMAP server so we have to learn the differences 
> > to go to Cyrus, especially the aggregator, backup/recovery, cyradm, 
> > etc.  So keep that in mind.
> > 
> > If anyone has any data that would even remotely be helpful I would 
> > greatly appreciate it.  We are comparing Exchange, MiraPoint and this 
> > (which is much cheaper) but people now want to compare accurate 
> > estimates of people resources to implement it.  To me, that is like 
> > asking me how long it would take me to learn [place any abstract task 
> > here that you have never done].
Ondrej Sury <ondrej at>

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