hi One addition, since the protocol change version is related to:
* syncmaildir.lua: - automatic recover when interrupted just before renaming *.db.new into *.db (was causing db-mismatch error) Can you consider cherry-picking the changes needed to the stable version, since this seems to fix a real bug which would affect the version in stable as well, and did make necessary to change the protocol version accordingly? If I'm not completely wrong that would be https://github.com/gares/syncmaildir/commit/eed14208c795afa0cab796b3c10116f5bf0e0f78 so updating via stretch-pu syncmaildir to have it fixed at next point release time would be possible. Regards, Salvatore