On Tue, 16 Nov 2010, Ciprian wrote: > Adam Tauno Williams wrote: >> I think the issue you will encounter first is clients will start to fall >> down when folders exceed a 'reasonable' number of messages. Common IMAP >> clients I've seen start to exhibit severe performance issues beyond a >> few hundred thousand messages. >> > Older versions of Outlook (e.g. Office 2003) will choke well before that > (I think the limit was around 35.000 on XP SP2 ) also couple that with > the local Outlook file store for that IMAP account which used to be > limited to 2G. We generally advice our users to avoid going past 20.000 > messages in one folder.
the nice thing is that this is per-folder, and generally shows up as a slowdown as you get large, so the user can just create a subfolder and move messages in to it to work around the client issues. This should mostly be self-regulating as a result. David Lang ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
