On 31/10/03 06:53 -0500, Suresh Ramasubramanian wrote: > Vaibhav Kante writes on 10/31/2003 5:34 AM: > > > what should be the appropriate mail system > > configuration (hardware and software) to handle about > > 7000 users (LDAP authentication), web-based mail, > > about 4MB quota per user and more than 400 > > simultaneous hits. Whats the peak number of emails flowing through? Missing that information is just bad (one page will generate one hit for each frame and one for each image, so you might want to use another metric). > Split your mailserver architecture across two or three machines - > multitiered architecture. > > [MX] ---> [BACKEND + LDAP] ---> [ Fileserver[s] to store email] > > The backend can also run the webmail server. I would add a frontend pop/imap proxy like perdition to enable scaling later. As for hardware, 2 x 36GB SCSI at 10K RPM with hardware RAID should suffice for your backend fileservers, LDAP is a memory hog ( 1 GB RAM is cheap), and the MX/SMTP server needs a small, very fast disk.
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