On Sat, Oct 17, 2026 at 05:56:47PM -0400, Ger wrote:
> libdovecot-sieve.so.0 in the Debian build contains an undefined reference to
> mail_deliver_ctx_get_log_var_expand_table, which is defined in
> /usr/lib/dovecot/libdovecot-lda.so.0, but the sieve library is not linked
> against libdovecot-lda. In Dovecot 2.4 each service is a separate binary
> (e.g. /usr/lib/dovecot/imap) that does not link libdovecot-lda, so dlopen()
> of the pigeonhole sieve plugin from the IMAP service fails with:
>
> undefined symbol: mail_deliver_ctx_get_log_var_expand_table
>
> This breaks any IMAP-context use of libdovecot-sieve, e.g. the sieve-imapsieve
> event hook used for antispam training on mailbox COPY events. The symbol only
> resolves in binaries that already have libdovecot-lda loaded, so the delivery
> side (lda/lmtp) works while IMAP event handling does not.
>
> Verification on this system:
> nm -D -u /usr/lib/dovecot/libdovecot-sieve.so.0.0.0 | grep log_var_expand
> -> U mail_deliver_ctx_get_log_var_expand_table
> readelf -d shows only libc.so.6 as NEEDED for the sieve library.
I don't see this, at least on amd64.
It's defined in libdovecot-lda:
root@c9c251285d2c:/# nm -D -U /usr/lib/dovecot/libdovecot-lda.so.0 | grep
log_var_expand
00000000000076a0 T mail_deliver_ctx_get_log_var_expand_table
But I don't see a reference to it in libdovecot-sieve.so:
root@c9c251285d2c:/# nm -D -u /usr/lib/dovecot/libdovecot-sieve.so.0.0.0 | grep
log_var_expand | wc -l
0
root@c9c251285d2c:/# nm -D -u /usr/lib/dovecot/libdovecot-sieve.so.0.0.0 | wc -l
458
root@c9c251285d2c:/# dpkg -S libdovecot-sieve.so.0.0.0
dovecot-sieve: /usr/lib/dovecot/libdovecot-sieve.so.0.0.0
root@c9c251285d2c:/# apt policy dovecot-sieve
dovecot-sieve:
Installed: 1:2.4.1+dfsg1-6+deb13u7
Candidate: 1:2.4.1+dfsg1-6+deb13u7
Version table:
*** 1:2.4.1+dfsg1-6+deb13u7 500
500 http://deb.debian.org/debian-security trixie-security/main amd64
Packages
100 /var/lib/dpkg/status
1:2.4.1+dfsg1-6+deb13u6 500
500 http://deb.debian.org/debian trixie/main amd64 Packages
What architecture are you using?
noah
