On 8. Dec 2025, at 19.52, Noah Meyerhans <[email protected]> wrote: > > Dovecot upstream switched to a different regex engine with version > 2.4.2. It now uses libpcre2, which may have subtle behavior differences > from the previous regex engine. Indeed I think that's the issue here.
I think this is just one more case of the issue that we were using pcre library wrong. Fixes in: https://github.com/dovecot/core/commit/d96c98e08ca0d445bd46192829685fbeaf4014d1 https://github.com/dovecot/core/commit/e704d9c72850684c1b82011c9550adbd4200f0eb https://github.com/dovecot/core/commit/7619375c605708414664e351bbab0f084e687e8f
