> Patrick Lauer wrote: > >>> Talking about storage, I'll use SCSI drives and a RAID1 hardware >>> controller. > >> Nonsense ;-) >> Linux software raid is as fast and easier to manage. Also SCSI is >> expensive - for the price of two scsi disks and a controller I can get >> a 6-disk software RAID5 that will most likely outperform it and has >> about 10x the space. >> For most uses el cheapo SATA will be better (but SCSI / SAS / >> FibreChannel has its place) > > An onboard RAID card has the advantage of local cache (assuming yours > comes with some) which really really helps make all those 10-15k writes > when shuffling mail around your through your MTA's internal queues. > Using qmail about three years ago I was able to move about 2 million > unique emails a day on a single machine. Without the RAID card it > dropped down to just under 1 million. That's an extreme case since we > weren't doing much processing on the email so the top speed was limited > only by I/O. > I agree that 4-6 drives of SATA is a better way to go over SCSI > especially with users under 1000. RAID 5/6 (software or hardware as your > budget decides) and worry less about your data. Also find our what they > were paying for mail so you can use 12-18 months as your budget. > is everyone comfortable with SATA in this role?
> The big problems is nailing the requirements for this down. > virus and spam checking? > what attachments can you deny? > calender? > global address book? > imap? pop? smtp-auth? > web mail? > How big is the average mail box? > Can you set soft quotas? > and so on. > Virus and Spamchecking will be my biggest concern. I'm happy with CLAMAV at home, since it updates itself, but i haven't played with spamassasin enough yet. Anyone have a place to point me to read up on a server setup? They don't know about calendaring, global address book, imap/pop, etc. Most mail is downloaded and deleted after a few days. The webmail users mail is only kept for a couple of weeks. (default server setting) now, I'd like to offer some of those things to them. Is there a calendaring solution out there? > Specing hardware is likely to be the easiest part once you know what you > are actually going to build. :-) > > Assuming you do everything in house I'd lean toward Openldap as the > backend for mail which should work nicely with Samba as an NT4 pdc so > you could have global logins for everyone with some planning. > This would be the long term desire. Samba/Global logins without M$..... > kashani > -- > [email protected] mailing list > > -- [email protected] mailing list
