[imp] Server setup for customer base of over 10,000

[Robert Sand]

Yes we do.  We have had it running in production since the middle of the 
last Spring Semester.

jonathan soong wrote:

>
> Does that mean you're running CVS/Head  in production?
>
>
> Robert Sand wrote:
>
>> Hello,
>>
>> We are running into a problem with our Horde/Imp server at our 
>> university.  When we converted to the CVS/head version of horde and 
>> imp last year we found that we could no longer use multiple servers 
>> for web/imap due to session information.  We would like to know what 
>> others are doing for a user base of over 10,000.  This would include 
>> dns, servers, etc.
>>
>> We are currently running the web server on a 4 processor Dell box 
>> with redhat 8,  and the sql server on a seperate box.  We have tried 
>> to use multiple imap boxes at first not running imapproxy and then 
>> running imapproxy.  We have run into the same problem each time that 
>> problem is that when there are a certain number of connections on the 
>> web box the imap boxes degrade to the point of not being usable which 
>> then degrades all other means of reading mail on campus.  All imap 
>> boxes are attached to a 4 processor Sun box that has a fibre 
>> connection to a SAN for the Inboxes.  The Sun has been optimized for 
>> the SAN connection.
>>
>> We have found that once the apache web server on the web box gets to 
>> a certain number of connections it spirals out of control spawning 
>> many threads.
>>
>> We would like to have a number of web boxes in a round-robin dns pool 
>> so that if a user goes to one url they will be evenly distributed to 
>> the whole.  Like I said this did work for use until the upgrade to 
>> the CVS/Head version of Horde/Imp.
>
>
>
>

-- 
Robert Sand.
mailto:rsand at d.umn.edu
University of Minnesota, Duluth
Information Technology Systems and Services
144 MWAH
218-726-6122        fax 218-726-7674

"Walk behind me I may not lead, Walk in front of me I may not follow,
 Walk beside me and we walk together"  UTE Tribal proverb.