I am running a very small dovecot installation with only one user (me). I use the Solr indexer for indexing. Due to complicated reasons, I was forced to remove all the indexes and need to re-index everything.
All the files in my Maildir are owned by md5i:mail (I am md5i), and have 660 permissions. All directories have the same user:group permissions, and 770 with the setguid bit set. (That last may not be necessary, but I was trying several things to get my use case to work.)
Unfortunately, I can't seem to get re-indexing to work. When I do "doveadm fts rescan -A" as root, I get the following error for each of my subgroups:
doveadm(md5i): Error: fchown(/home/md5i/Maildir/.mail.test/dovecot.index.log.newlock, group=8(mail)) failed: Operation not permitted (egid=1000(md5i), group based on /home/md5i/Maildir/.mail.test - see http://wiki2.dovecot.org/Errors/ChgrpNoPerm)
After this, each directory has a dovecot.index.log with md5i:md5i 600 permissions.
I've read the mentioned page, and played around with the ideas on it, but haven't gotten things to work. Anyone have any clue to ship my way?
-- Michael Welsh Duggan (md5i@md5i.com)