Hi,

I'm trying to get Dovecot's deliver to create and use mailboxen with one uid per user. Reading the wiki, I decided to go with the sudo attempt, but I'm stuck because deliver fails to create the intermediate directories. The auth.log has this on the matter:

sudo: dovelda : TTY=unknown ; PWD=/var/spool/postfix ; USER=root ; COMMAND=/usr/lib/dovecot/deliver -f toni@bogus.oeko.net -d dick@example.com

Using strace on 'deliver', I get this:

# su - dovelda $ echo "blubber" |sudo strace /usr/lib/dovecot/deliver -f toni@bogus.oeko.net -d dick@example.com ... geteuid() = 0 getgid() = 0 setgid(2000) = 0 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ setgroups(1, [2000]) = 0 setuid(2100) = 0 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ setuid(0) = -1 EPERM (Operation not permitted) getgid() = 2000 getegid() = 2000 setgid(0) = -1 EPERM (Operation not permitted) close(6) = 0 geteuid() = 2100 geteuid() = 2100

and subsequently, creating the directories fails.

The values in the underlined lines above, 2100 and 2000, are from the database entry of the user I want to deliver the email to.

My /etc/sudoers has this for dovelda:

dovelda ALL=NOPASSWD:/usr/lib/dovecot/deliver dovelda ALL=NOPASSWD:/usr/bin/strace

I'm using a Debian/Lenny system with amd64 and this package for Dovecot:

# dpkg -l 'dovecot*' Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Cfg-files/Unpacked/Failed-cfg/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad) ||/ Name Version Description +++-==============-==============-============================================ ii dovecot-common 1:1.2.13-1~bpo secure mail server that supports mbox and ma ii dovecot-imapd 1:1.2.13-1~bpo secure IMAP server that supports mbox and ma

Kind regards, --Toni++