On Fri, Apr 02, 2021 at 04:45:36PM -0400, Michael Grant wrote: > Every few days, my mailbox seizes up. No mail come in to my imap clients. > > I'm getting these errors over and over with my mailbox: > > Error: Mailbox INBOX: Deleting corrupted cache record uid=371208: UID > 371208: Broken physical size in mailbox INBOX: read(/var/mail/mgrant) failed: > Cached message size smaller than expected (17212 < 17222, box=INBOX, > UID=371208) > Error: Mailbox INBOX: UID=371208: read(/var/mail/mgrant) failed: Cached > message size smaller than expected (17212 < 17222, box=INBOX, UID=371208) > (FETCH BODY[]) > Error: Mailbox INBOX: Deleting corrupted cache record uid=371203: UID > 371203: Broken physical size in mailbox INBOX: read(/var/mail/mgrant) failed: > Cached message size smaller than expected (3904 < 3914, box=INBOX, UID=371203) > Error: Mailbox INBOX: UID=371203: read(/var/mail/mgrant) failed: Cached > message size smaller than expected (3904 < 3914, box=INBOX, UID=371203) > (FETCH BODY[]) > > My inbox is an mbox file. I'm running dovecot installed on Debian > Bullseye, the dovecot packages are all: 1:2.3.13+dfsg1-1 > > I am running sendmail and using procmail for local delivery. > > I suspect, but am not certain, that this may be some locking issue > between procmail and dovecot but I have never been able to prove > that. The final procmail rule which appends messages to my mailbox > looks like this, the trailing ':' causes procmail to use a lockfile: > > :0: > /var/mail/mgrant > > The locking config lines in 10-mail.conf are commented, but I have > also tried uncommenting them, did not help: > > #mbox_read_locks = fcntl > #mbox_write_locks = fcntl dotlock > > Though sometimes it seems to fix itself after a few hours, the only > way I have found to fix this quickly is to manually remove the cache > files and restart dovecot: > > rm ~/mail/.imap/INBOX/* > systemctl restart dovecot > > I am not even sure this is a locking issue. Something definitely gets > corrupted though. I do have several IMAP clients hitting the same > mailbox (phone, laptop, desktop). On the phone, I run K9 and also the > gmail client which talks imap. Also using thunderbird, outlook, and > w10 mail, though typically not all at the same time. You could > definitely say I am stress testing this setup a bit! > > Any ideas on how to resolve this?
I still see this corruption every day or so. Anyone have any ideas how to debug this or resolve it? Michael Grant
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