> On 14 Aug 2018, at 09:38, Michael Menge <michael.me...@zdv.uni-tuebingen.de> > wrote: > > > Quoting Dirk-Willem van Gulik <di...@webweaving.org > <mailto:di...@webweaving.org>>: > >> On a smal cyrus imap 2.5.3 setup (freebsd ports, default settings, 5k users, >> 300 Gb mboxes) we are seeing very sporadic `loss' of messages (once every >> few months; 1 or 2 messages; out of a few 100k to a million going through >> perfectly fine in the same period). >> >> They disappear; but are still present as a /var/spool/imap/user/X/12345. >> files. >> >> But cannot be found; even when searching through IMAP on message-ID or >> otherwise unique elements. Searches in the same veign for the messages >> before/after the lost one work and return those. >> >> A grep through the cyrus.index shows its unique message ID. >> >> A full reconstruct with /-r/-R/-G does not seem to bring it back as visible. >> >> The mesaages lost are otherwise normal; fully valid mime; and when >> re-injected - pass through and surface. >> >> What is the right way to debug this ? We suspect it may have something to do >> with either (al)pine and thunderbird; as it seems to hit users that mix >> those two clients - during periods they use both. All else seems normal. > > Do you use delayed expunge mode (man imapd.conf see expunge_mode)? > If yes, "unexpunge -l user/X" will show you the mails that have been deleted > but are still on the disk. > You will also see the time the mail was deleted.
Yes we do. And did not know about that command. Where is this recorded / what rebuilds this file (and no - in this case - it was not deleted, we do use delayed expunge) ? Dw.
