On 04/09/2014 12:59, Sam Varshavchik wrote: > Jakob Bohm writes: > >> « HTML content follows » >> >> On 03/09/2014 14:44, Sam Varshavchik wrote: >>> Jakob Bohm writes: >>> >>>> The hang seems to occur between the time when authdaemond logs that the >>>> >>>> user was Authenticated and when imapd usually logs that same event. >>> >>> Random guess: NFS, problem automounting the user's home directory? >> Local filesystem, I have heard enough horror stories not to mount the >> home dirs >> dynamically and/or over NFS. >> >> Oh, and >> # /etc/init.d/courier-imap-ssl restart >> gets it back up for a short while > > Only strace+friends can probably figure this out. > > You should be able to find a stuck imapd process, or two, and use > strace to figure out what it's doing. Finding the stuck imapd out of all the other ones would have been the hard part, but see below. > > A couple of things happen immediately after authentication, that are > frequent causes of problems. > > - gamin/fam initialization > Seems to have been gamin. I kept getting warnings about gamin timeouts at other times than the failures, so I switched to fam, just in case. That seemed to make the problem go away.
> - if there's a loginexec link in the maildir, it gets executed, and > the imap server waits until it finishes. There isn't on this server. > > Other than that, the next thing that happens is the response to the > original IMAP command gets sent. Whatever goes wrong, must happen > before that, and these two are the most likely suspects. > Thanks! And thanks for mentioning the other possibility, it might help some other admin in the same situation. Enjoy Jakob -- Jakob Bohm, CIO, Partner, WiseMo A/S. http://www.wisemo.com Transformervej 29, 2860 Søborg, Denmark. Direct +45 31 13 16 10 This public discussion message is non-binding and may contain errors. WiseMo - Remote Service Management for PCs, Phones and Embedded ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that matters. http://tv.slashdot.org/ _______________________________________________ Courier-imap mailing list Courier-imap@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-imap
