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

[jonathan soong]

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.