On Wed, 12 Oct 2016 12:06:19 -0500 Bryan Holloway <br...@shout.net> wrote:
[...] > >> Basically what's happening is that users are seeing large delays > >> when navigating between different IMAP folders. So, for example, > >> user "X" is sitting idle in their INBOX. If they then click on > >> another folder there's a good 6-7 second delay before you can view > >> its contents. If you immediately then navigate to other folders, > >> you get a rapid response. But if the client then goes idle again > >> for 10+ seconds, you will get this delay again. Some are reporting > >> the OS saying "Outlook is not responding." (Everyone is running > >> Windows 7.) > > [...] > >> Any help, suggestions, or pointers would be greatly appreciated. > > > > Do you see > > > > imap(username) Disconnected for inactivity in=X out=Y > > > > in the logs? > > > > From your description, it appears as if outlook gets disconnected at > > some point, and that's why fast changing of the folders works OK > > (the connection is live) and doing this after a pause forces a > > reconnect with the following relogin. > > > > Just a shot in the dark but still... > > I do see quite a few of those, but I tend to see those for many > clients across the board. > > That does make a lot of sense though. I'm looking at the logs right > now, and I see what amounts to a login, followed by a disconnect > 10-15 seconds later. > > I thought that a standard IMAP connection stays open for at least 30 > minutes based on the RFC. (?) Unfortunately, I don't have much familiarity with this topic but please try googling for the exact phrases dovecot + "Disconnected for inactivity" (literally double quoted) -- and you'll discover a hefty amount of past discussions touching this topic. They may give you further clues as to what things to try next.