IMAP Implementation People Time Estimates

Christopher T. Beers ctbeers at
Wed Mar 2 18:12:36 EST 2005

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].


Christopher T. Beers
Lead UNIX Architect - System Infrastructure Services (SIS)
Syracuse University | 250 Machinery Hall | Syracuse, NY 13244
(315) 443-4103 Office | (315) 443-1621 Fax | p-ctbeers at Pager
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