https://manpages.ubuntu.com/manpages/resolute/man8/exim_tidydb.8.html
Ubuntu Manpage: exim_db - Exim's hint databases maintenance (exim_dumpdb, exim_fixdb, exim_tidydb)
Exim's hint databases maintenance (exim_dumpdb, exim_fixdb, exim_tidydb)
ubuntumanpageeximdb
https://mail.python.org/pipermail/mailman-users/2006-July/052432.html
[Mailman-Users] changing Member Options or Import dumpdb
member optionsmailmanuserschangingimport