Upstream bug reports: https://www.mail-archive.com/postfix-users@postfix.org/msg108091.html (implies FreeBSD, bug report by Michael Grimm) https://www.mail-archive.com/postfix-users@postfix.org/msg108079.html
Relevant patches slated for upcoming LMDB 1.0.1 and discussed on the postfix-devel mailing list fix Postfix's LMDB 1.0.0 regression -> https://marc.info/?t=178363071700003&r=1&w=2 Alternative archive: https://www.mail-archive.com/postfix-devel@postfix.org/msg01339.html Referenced patch: https://git.openldap.org/openldap/openldap/-/merge_requests/900.patch
postfix has already been reverted to the recently-committed lmdb0. I will track the progress and once there will be any subsequent update to either LMDB and/or postfix, I will update the postfix port to use databases/lmdb again (instead of databases/lmdb0).