> On 23/01/2026 13:00 EET Richard via dovecot <[email protected]> wrote:
>
>
> Hi,
>
> I've managed to fix some issues today.
>
>
> On 1/22/26 19:37, Richard wrote:
> >
> > Jan 22 19:16:04 imap(user)<82612><thWtCP5I7OuGPXzg>: Error: Mailbox
> > INBOX: UID 31518: Deleting corrupted cache record: Broken virtual size
> > in mailbox INBOX:
> > read(/maildirs/user/Maildir/cur/1769006028.M895618P2636851.mail,S=21001,W=21465:2,S):
> >
> > FETCH BODY[] got too little data: 11619 vs 21465
> > Jan 22 19:16:05 imap(user)<82614><Oy+wCP5I/OuGPXzg>: Error: Mailbox
> > INBOX: UID 31517: Deleting corrupted cache record: Broken physical
> > size in mailbox INBOX:
> > read(/maildirs/user/Maildir/cur/1769002524.M378861P2632916.mail,S=229241,W=232394:2,S)
> >
> > failed: Cached message size larger than expected (229241 > 149967,
> > box=INBOX, UID=31517)
> >
> > I have set maildir_broken_filename_sizes = yes in 10-mail.conf, which
> > I expected to prevent this, but is seemingly doesn't really. Do I have
> > to purge some cache? Also something similar happens when sending mail:
> >
> > Jan 22 19:26:53
> > indexer-worker(user)<88639><pobvLv5IOtqGPXzg:tyFvLuZrcmk/WgEApdA/4w>:
> > Error: fts-flatcurve: fts-flatcurve(Sent): Could not write message
> > data: uid=1075; InvalidArgumentError: Term too long (> 245):
> > B)l�5y�h�^H1gg^W^�^O�o�]s�ቄ�^Elkhv/�g^Cok3�)�{^Ft^Cm�b�lw,�1l^B�^[u^MbҾ\�u�b�n[f�j�w;�r�y7+�eȯqu�^L^\�x^L�f�(`�xfkw�<�ǣ�x5rv^G^L)�#zhh^B_7w/ztl}^Q.�1�5a�/�q�^M�^C^_^�"^Dd�j_�o�"x^Dya͘_^_n
> > Jan 22 19:26:53
> > indexer-worker(user)<88639><pobvLv5IOtqGPXzg:tyFvLuZrcmk/WgEApdA/4w>:
> > Error: Mailbox Sent: UID 1077: Deleting corrupted cache record: Broken
> > physical size in mailbox Sent:
> > read(/maildirs/user/Maildir/.Sent/cur/1589821415.M621487P6382.mail,S=8285,W=8432:2,Sa)
> >
> > failed: Cached message size larger than expected (8285 > 3115,
> > box=Sent, UID=1077)
> > Jan 22 19:26:53
> > indexer-worker(user)<88639><pobvLv5IOtqGPXzg:tyFvLuZrcmk/WgEApdA/4w>:
> > Error: Mailbox Sent: UID 1077:
> > read(/maildirs/user/Maildir/.Sent/cur/1589821415.M621487P6382.mail,S=8285,W=8432:2,Sa)
> >
> > failed: Cached message size larger than expected (8285 > 3115,
> > box=Sent, UID=1077)
> > Jan 22 19:26:53
> > indexer-worker(user)<88639><pobvLv5IOtqGPXzg:tyFvLuZrcmk/WgEApdA/4w>:
> > Error: Mailbox Sent: Precache for UID=1077 failed:
> > read(/maildirs/user/Maildir/.Sent/cur/1589821415.M621487P6382.mail,S=8285,W=8432:2,Sa)
> >
> > failed: Cached message size larger than expected (8285 > 3115,
> > box=Sent, UID=1077) (attempted to index 871 messages between UIDs
> > 179..1077)
> >
> > And while the logs don't seem to mention it, I guess that's also
> > interfering with receiving mails, as postfix confirms getting the mail
> > (though it complains about not being able to write to
> > /var/log/dovecot/error.log, but I also don't know why it would need
> > that so I'm currently not looking into it), but it dovecot never says
> > it received it and also no new file is created in
> > /maildirs/user/Maildir/cur/.
> >
> This could be fixed with doveadm force-resync -u username.
> >
> >
> > I have issues with some plugins. I have in 20-imap.conf and
> > 15-lda.conf inside mail_plugins "zlib = yes", but no zlib-related
> > module can be found. Is there a different way to enable mail
> > compression and decompression or did Debian just miss to enable that
> > at compilation?
> >
> I've just notived that I need to replace "zlib = yes" with
> "mail_compress = yes", so that's also fixed now. But I'll still need
> help understanding/adapting this:
> >
> >
> > I also have issues with the sieve plugin. I had it enabled in
> > 15-lda.conf, 20-managesieve.conf, 20-imap.conf and 20-lmtp.conf. As I
> > understand I don't need all of them. At least if I do I get a weird
> > issue (Error: Couldn't load required plugin
> > /usr/lib/dovecot/modules/lib90_sieve_plugin.so: dlopen() failed:
> > /usr/lib/dovecot/modules/lib90_sieve_plugin.so: undefined symbol:
> > mail_deliver_ctx_get_log_var_expand_table). So where exactly do I
> > enable it? Also, I'd need help modifying something I put into
> > 90-plugins.conf:
> >
> > plugin {
> > # From elsewhere to Junk folder
> > imapsieve_mailbox1_name = Junk
> > imapsieve_mailbox1_causes = COPY
> > imapsieve_mailbox1_before =
> > file:/etc/dovecot/sieve/global/learn-spam.sieve
> >
> > # From Junk folder to elsewhere
> > imapsieve_mailbox2_name = *
> > imapsieve_mailbox2_from = Junk
> > imapsieve_mailbox2_causes = COPY
> > imapsieve_mailbox2_before =
> > file:/etc/dovecot/sieve/global/learn-ham.sieve
> >
> > sieve_pipe_bin_dir = /etc/dovecot/sieve/global
> > sieve_global_extensions = +vnd.dovecot.pipe
> > +vnd.dovecot.environment
> > sieve_plugins = sieve_imapsieve sieve_extprograms
> >
> > # Compression
> > zlib_save_level = 4 # 1..9
> > zlib_save = zstd or bz2, If this config entry missing,
> > compression is disabled.
> > }
> >
> > but when I do it that way I get the error "doveconf: Fatal: Error in
> > configuration file /etc/dovecot/conf.d/90-plugin.conf line 9: Unknown
> > section name: plugin".
> >
>
> Best regards
>
> Richard
>
mail_plugins {
mail_compress = yes
}
zlib_save => mail_compress_write_method = zstd
zlib_save_level => compress_zstd_level = 4
plugin section has been fully removed in 2.4. Please see
https://doc.dovecot.org/2.4.2/installation/upgrade/2.3-to-2.4.html
Aki
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