Hello Łukasz,

This happens when the user is logged in on the computer.  The user has to check for important emails in Junk regularly.  We're trying to turn off adaptive Junk filters in Thunderbird right now, but I'm not sure if it's a TB issue or something with the server side filtering.   Also, Spamassassin isn't marking these emails as spam either, so we're kind of stumped right now.

On 4/2/2021 1:34 PM, Łukasz Szczepański wrote:

Thunderbird has built in spam control feature and can move message to junk on it self. When message is moved to Junk? Only when user is connected to mailbox or even when nobody is logon? W dniu 2 kwi 2021, o 20:26, użytkownik Asai mailto:asai@globalchangemusic.org> napisał:

Greetings,

I'm trying to debug an issue with a user who is finding emails
(user uses Thunderbird as client) ending up in Junk folder, and
constantly marks email as Not Junk, but important email ends up in
Junk folder.

I have sieve set up, but am unable to determine if this is the
result of a sieve problem (sieve will automatically move certain
emails into Junk if certain headers are present, but these headers
are not present on these emails.)

I'm looking in Dovecot debug logs to try to figure this out, but
all I can find is sometimes this, and I don't know if this is
relevant.  Can anyone point us in the right direction for solving
this issue?

Apr 01 11:51:05 imap(user@domain.tld)<102535><+kTsYd6+f83AqEbH>: Debug: Mailbox Junk: Mailbox opened because: UID move
Apr 01 11:57:08 imap(user@domain.tld)<102735><P3dSa96+kM3AqEbH>: Debug: Mailbox Junk: UID 565: Opened mail because: prefetch
Apr 01 11:57:08 imap(user@domain.tld)<102735><P3dSa96+kM3AqEbH>: Debug: Mailbox Junk: UID 565: Opened mail because: access
Apr 01 11:57:08 imap(user@domain.tld)<102735><P3dSa96+kM3AqEbH>: Debug: Mailbox Junk: UID 565: Opened mail because: full mail
Apr 01 12:00:20 imap(user@domain.tld)<71333><OX7P1+2+BfcKCgFy>: Debug: Mailbox Junk: Mailbox opened because: STATUS
Apr 01 18:52:10 imap(user@domain.tld)<114066><WLt3mPO+z8QKCgFy>: Debug: Mailbox Junk: Mailbox opened because: SELECT

-- Asai 520.260.6887