Jason S wrote:
On 4/29/05, p dont think <[EMAIL PROTECTED]> wrote:
Daniel W wrote:
Jason S wrote:
I've been using squirrelmail successfully for about 2 years with a small userbase (about 1000). I have the opportunity to setup a webmail system for a large company (approx 150,000) users.
They currently only offer pop3 access and a heavily modified version of Omail for webmail. The backend is qmail/vpopmail w/Maildirs over NFS.
Anyone have experience with the scalability of such a large setup?
Thanks,
I dont think squirrelmail will be your sticking point. As long as you have a decent storage box you can stick multiple access machines out front each with squirremail on to spread the load. Think about getting a serious storage solution though.
Yes, SM is not going to be the bottleneck. You should read the thread from the last few days about load balancing and whatnot: you will want multiple www servers in front of a well-planned infrastructure, which is probably already built out from the sound of your mail. So your job will just be to make sure you get enough web servers and load balance them (LVS, etc) correctly, making sure you address issues of shared data directories if you have file-based prefs and file-based sessions... there was a lot of discussion about just that on the thread I mentioned above.
-paul
Yes, I have been following that thread closely. Some very good points have been made. I've been using SQL based prefs for a while, so that will not be an issue. My concerns now (from a squirrelmail standpoint) are getting the sessions stored in a DB and what to do about the temporary attachment directories.
There is no easy solution for the attachments directory if you are going the database route. That directory has no db-based alternative, and that's not likely to change any time soon. Per that other thread, it might be a lot easier to throw your sessions and attachments dir onto a shared filesystem. If that's NFS-based, keep in mind the importance of persistence as noted by John in the other thread.
-paul
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