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mail-server/dovecot: also learn spam/ham on APPEND

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The current configuration doesn't work when moving spam from the INBOX
to Junk on a local maildir and then syncing the result to the IMAP
server with `mbsync(1)`. This is because `mbsync(1)` doesn't support a
mvoe-detection[1] (i.e. an IMAP MOVE which subsequently causes a Sieve
COPY according to RFC6851 which then triggers report{h,sp}am.sieve), but
instead sends `APPEND` (and removes the message in the src mailbox after
that).

Tested on my own mailserver that this fixes spam learning.

This doesn't work the other way round though because `APPEND` doesn't
have an origin. However, learning mails as spam happens more often than
learning spam as ham, so this is IMHO still useful.

[1] https://sourceforge.net/p/isync/mailman/isync-devel/thread/87y2p1tihz.fsf%40ericabrahamsen.net/#msg37030483
This commit is contained in:
Maximilian Bosch 2023-04-16 20:30:03 +02:00 committed by lewo
parent c04e4f22da
commit bd99079363
1 changed files with 1 additions and 1 deletions
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mail-server/dovecot.nix
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@ -243,7 +243,7 @@ in
# From elsewhere to Spam folder # From elsewhere to Spam folder
imapsieve_mailbox1_name = ${junkMailboxName} imapsieve_mailbox1_name = ${junkMailboxName}
imapsieve_mailbox1_causes = COPY imapsieve_mailbox1_causes = COPY,APPEND
imapsieve_mailbox1_before = file:${stateDir}/imap_sieve/report-spam.sieve imapsieve_mailbox1_before = file:${stateDir}/imap_sieve/report-spam.sieve
# From Spam folder to elsewhere # From Spam folder to elsewhere