On 23/02/25 22:47, Sam Varshavchik wrote:
E.S. Rosenberg via Courier-imap writes:
Thanks I hope you can make more of these errors than me...
Attached the log, am excerpt:
WRITE: 29 OK LSUB completed
READ: NUMBER: 30
READ: ATOM: LIST
READ: QUOTED_STRING:
READ: QUOTED_STRING: INBOX
READ: EOL
WRITE: * LIST (\Marked \HasChildren) "." "INBOX"
30 OK LIST completed
WRITE: 15 OK LOGIN Ok.
READ: NUMBER: 16
READ: ATOM: CAPABILITY
READ: EOL
WRITE: * CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE
THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE AUTH=PLAIN ACL
ACL2=UNION ENABLE UTF8=ACCEPT
16 OK CAPABILITY completed
READ: NUMBER: 17
READ: ATOM: ENABLE
READ: ATOM: UTF8=ACCEPT
READ: EOL
WRITE: * ENABLED UTF8=ACCEPT
17 OK Options enabled
READ: NUMBER: 18
READ: ATOM: SELECT
READ: QUOTED_STRING: INBOX
READ: EOL
WRITE: 18 NO Unable to open this mailbox.
There's nothing in the IMAP command log that points to an issue. But it
does show that the server did log in and cd to the appropriate
directory, and the error is in response to an actual attempt to read the
mailbox, so this is back to a filesystem permissions issue.
As a measure of last resort, strace the IMAP process. Find the pid of
the process that's listening on the IMAP port, port 143 (fuser -n tcp
143). If using imaps that's port 993. Then, attach strace to the process:
strace -s 256 -f -o /tmp/strace.log -p {pid}
You'll need to manually CTRL-C this after a failed login attempt, to
stop it. This is likely to create a large log file, but you can grep for
the error message, and then inspect what the process was doing just
before emitting the error.
Have you checked the analysis from the FreeBSD user at
https://lists.freebsd.org/archives/freebsd-questions/2025-February/006307.html
?
I think it points correctly to the point of failure, when the process
performs access checks on the maildir.
--
Guido Falsi <m...@madpilot.net>
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