This seems to be related to 0005769

see logs

Hello,
There are several issues about that missing separator that happens sometime, and I've had a look at some point:

C: 4 LIST "" ""
R: * LIST (\Noselect) "." ""
R: 4 OK Completed (0.000 secs)
C: 5 status "INBOXSent" (UIDVALIDITY)
R: 5 NO Mailbox does not exist
C: 6 create "INBOX.Sent"

The delimiter is set when doing the LIST command, in all the cases we can see the delimiter (here it's "."). Then it's the same variable that is used for doing all the following command so I didn't understand how it was possible for it to be missing int the first command (status) but not in the second (create)...

However, could you add in your sogo.conf:
ImapLogEnabled = YES;
It may print some more logs that could help when this problem happens

Hi,

Thanks for the quick response! As ImapLogEnabled didn't do anything, I set ImapDebugEnabled=Yes and this one worked.

I'm waiting for the error to show up again, will update this item when I have new results.

Hello,

See the newly attached file containing corresponding logs from sogo- and imap-server.

Hello,
Thanks for the log alas not new useful information or error. I would have to think a proper way to catch this error and understand why it happens.

Hi,

No clues by now? Users get annoyed and start demanding to use a different mailing-client! Any workaround would be very welcome (e.g. setting something in a config-file, the database...)!

Tanks

Well the best workaround would be to use the / instead of . as a imap delimiter. I've only see this issue with the . delimiter

Thanks for the hint! We reconfigured imap-Server und sogo.

I'll keep you updated.

Sorry, issue still exists!

Turned on IMAPDebug again.

Do you use cyrus or dovecot?

Cyrus IMAP 3.6.1-Debian-3.6.1-4+deb12u1

Could you share your imapd.conf?

sure:
configdirectory: /var/lib/cyrus
proc_path: /run/cyrus/proc
mboxname_lockpath: /run/cyrus/lock
defaultpartition: default
partition-default: /var/spool/cyrus/mail
partition-news: /var/spool/cyrus/news
newsspool: /var/spool/news
altnamespace: no
unixhierarchysep: yes
lmtp_downcase_rcpt: yes
allowanonymouslogin: no
popminpoll: 1
autocreate_quota: 524288
umask: 077
sieveusehomedir: false
sievedir: /var/spool/sieve
httpmodules: caldav carddav
hashimapspool: true
allowplaintext: yes
sasl_mech_list: PLAIN
sasl_pwcheck_method: saslauthd
lmtpsocket: /run/cyrus/socket/lmtp
idlesocket: /run/cyrus/socket/idle
notifysocket: /run/cyrus/socket/notify
syslog_prefix: cyrus
xlist-sent: Sent
xlist-drafts: Drafts
xlist-junk: Spam
xlist-templates: Templates
xlist-trash: Trash
allowusermoves: 1
imapidresponse: 0

configdirectory: /var/lib/cyrus
proc_path: /run/cyrus/proc
mboxname_lockpath: /run/cyrus/lock
defaultpartition: default
partition-default: /var/spool/cyrus/mail
partition-news: /var/spool/cyrus/news
newsspool: /var/spool/news
altnamespace: no
unixhierarchysep: yes
lmtp_downcase_rcpt: yes
allowanonymouslogin: no
popminpoll: 1
autocreate_quota: 524288
umask: 077
sieveusehomedir: false
sievedir: /var/spool/sieve
httpmodules: caldav carddav
hashimapspool: true
allowplaintext: yes
sasl_mech_list: PLAIN
sasl_pwcheck_method: saslauthd
lmtpsocket: /run/cyrus/socket/lmtp
idlesocket: /run/cyrus/socket/idle
notifysocket: /run/cyrus/socket/notify
syslog_prefix: cyrus
xlist-sent: Sent
xlist-drafts: Drafts
xlist-junk: Spam
xlist-templates: Templates
xlist-trash: Trash
allowusermoves: 1
imapidresponse: 0

see new log (with / as delimiter)

Hello again
In the next nightly tomorrow, I've added more logs. Could you add this to your sogo.conf then restart sogod.
SOGoDebugRequests = YES;
ImapDebugEnabled = YES;
SOGoUIxDebugEnabled = YES;

Then give me the full log file when you see the problem.

Hello, I've made a fix and another person said it was okay after that.
Could you install the last nightly and test it?
Just in case, add this to your sogo.conf:

SOGoDebugRequests = YES;
ImapDebugEnabled = YES;
SOGoUIxDebugEnabled = YES;
NGImap4ConnectionFolderDebugEnabled = YES;

So if it doesn't work, you could give me the log to see what happens.

Sorry for being late...

I'll have to switch the system to nightly (we're on 5.8.0 as delivered with bookworm) and will only be able to do this after 08.01.2024.

I'll be back then to keep you updated again.

Happy hollidays and a happy new year!

Switched to nightly and added the debug-settings to sogo.conf.

Hi,

have been watching for more than one week. Error did'nt occur anymore, problem resolved!

Thanks a lot!

Thanks for reporting!