Am 28.08.2019 um 20:02 schrieb Aki Tuomi via dovecot dovecot@dovecot.org:
On 28/08/2019 21:01 R.N.S. via dovecot dovecot@dovecot.org wrote:
Am 28.08.2019 um 19:46 schrieb Jakobus Schürz via dovecot dovecot@dovecot.org:
I think, i had the same problem as you.
When dovecot runs lmtp, no user is logged in, so there is no user from which you can get groups. So i think, my solution is (not really sure, if this is right, it's a long time ago, i played around) this transport in exim for local delivery
dovecot_delivery:
debug_print = "T: dovecot_delivery_pipe for $local_part@$domain translates to GET_LOCAL_MAIL" driver = pipe
command = /usr/lib/dovecot/deliver -d "GET_LOCAL_MAIL" message_prefix = message_suffix = delivery_date_add envelope_to_add
return_path_add
log_output user = MAILUSER group = MAILUSERI have a really sophisticated setup with ldap... so GET_LOCAL_MAIL and MAILUSER are makros which get the email-adress and the mailuser for the receiving emailadress.
GET_LOCAL_MAIL could be $local_part@$domain MAILUSER is vmail in my setup, the user who owns all mailboxes
/usr/lib/dovecot/deliver is an alternative for the lmtp-delivery.
Unfortunately this way Postfix and Dovecot need to run on the same host.
I wonder, if this is a LMTP or Sieve issue. Maybe something can be done in sieve configuration to solve this?
Is there nobody from @Dovecot who could give some feedback :-) please :-)
Thanks
Christian
It could be possible to solve this with auth lua script that would allow returning the acl groups as a string, instead of using post-login script.
I finally got it working with Lua.
Changes to the auth-ldap.conf.ext file:
userdb { driver = ldap args = /etc/dovecot/dovecot-ldap.conf.ext
# Fetch acl_groups from LDAP with the Lua userdb script skip = never result_success = continue result_failure = return-fail
# Default fields can be used to specify defaults that LDAP may override #default_fields = home=/home/virtual/%u }
I created this auth-lua.conf.ext:
# https://wiki.dovecot.org/AuthDatabase/Lua
userdb { driver = lua args = file=/etc/dovecot/dovecot-auth-userdb.lua blocking=yes }
I added it in 10-auth.conf behind the LDAP auth include statement.
The Lua script looks like this:
require('io')
function auth_userdb_lookup(req) local bindpwfile = "/etc/dovecot/ldap-auth-userdb.secret" local base = "ou=people,ou=it,dc=roessner-net,dc=de" local binddn = "cn=dovecot," .. base
local cmd = [=[
/bin/sh -c "ldapsearch -LLL -ZZ -y $bindpwfile -xD $binddn -b $base '(rnsMSDovecotUser=$user)' rnsMSACLGroup |
grep rnsMSACLGroup |
awk -vORS=, '{ print \$2 }' |
sed 's/,$/\n/'"
]=]
cmd = cmd:gsub('$(%w+)', { bindpwfile = bindpwfile }) cmd = cmd:gsub('$(%w+)', { binddn = binddn }) cmd = cmd:gsub('$(%w+)', { base = base }) cmd = cmd:gsub('$(%w+)', { user = req.user })
local handle = io.popen(cmd) local acl_groups = handle:read("*a")
return dovecot.auth.USERDB_RESULT_OK, "acl_groups=" .. acl_groups end
function script_init() return 0 end
function script_deinit() end
-- vim: expandtab ts=2 sw=2
And this works for me :-)
Many thanks
Christian