On Wed, May 6, 2009 at 7:23 AM, Brandon Lamb <brandonl...@gmail.com> wrote: > On Wed, May 6, 2009 at 5:25 AM, Kenneth Kalmer <kenneth.kal...@gmail.com> > wrote: >> On Tue, May 5, 2009 at 11:39 PM, Timo Sirainen <t...@iki.fi> wrote: >> >>> On Tue, 2009-05-05 at 23:32 +0200, Kenneth Kalmer wrote: >>> > >> * NFS server which is the same server that houses single Courier-IMAP >>> > >> installation (Gentoo, 3GB memory) >>> > >> * 2x Postfix instances delivering to NFS >>> > >> >>> > > >>> > > NFS may be problematic. Dovecot expects a perfectly working NFS setup, >>> > > which seems to be a bit rare to find. http://wiki.dovecot.org/NFS >>> > > >>> > >>> > Just for the record, dovecot will be access the mail directly on the >>> disks, >>> > it will be the LDA's on the postfix instances coming in over NFS. I'm >>> > reading the NFS again to make sure I understand the risks >>> >>> If the LDA is Dovecot deliver, it's the same problem since it also >>> updates index/control files that cause the problems. But if you're using >>> something else that does nothing but write the maildir files, then it's >>> fine. >>> >> >> I'm looking to use the Dovecot LDA so the caches are updated and the >> filenames are correct, to get good POP3 performance. >> >> I'm looking forward to giving Dovecot a go, but I'll rig up a staging >> environment first. >> >> Thanks for the encouraging responses everyone. >> >> Best >> >> -- >> Kenneth Kalmer >> kenneth.kal...@gmail.com >> http://opensourcery.co.za >> @kennethkalmer > > I moved from a 4 gig nfs server with eight mailheads running exim as > lda, courier imap/pop3 (over nfs) to an 8 gig nfs server and moved to > dovecot imap/pop3 running directly on the nfs server and dropped to > four mailheads running exim with dovecot lda. > > At first I tried to keep my imap/pop3 services running on the 4 > mailheads but over nfs had major weird 500 load spikes randomly, > moving these to the nfs server solved all of that. The 4 mailheads > still deliver to maildir over nfs using dovecot as lda. I have been > pleasantly pleased. Our webmail app in our old setup used to take > 10-30 seconds to load and now it is instantaneous. Some of it might be > from upgrading hardware, but I definitely had a HUGE noticeable > difference and you couldnt convince me to go back. > > We did have about a week of sucktastic traffic and my support > department hating me because all our pop3 leave-messages-on-server > users had to redownload all their mail, but it was worth the headache. > Dovecot is just too sweet, with its performance and plugins to ever > have to even think about a choice between it or software X. > > Just my $0.02
Oh yea, and I just recently discovered the virtual mailbox plugin and fell even more in love. I am developing a Gmail clone inhouse for our new webmail (we're an ISP). It is cool plugins like this that make me glad I switched to Dovecot. Being able to consolidate various Deleted, Trash, Deleted Items, Deleted Mails folders all into a single virtual/Trash folder is GREAT.