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On Thu, 31 Jul 2014, Mildred Ki'Lya wrote:
On 30/07/2014 23:32, Gedalya wrote:
Could it be related to something in your dovecot configuration (which
you didn't post)?
Despite the fact that an interesting conversation is developing in the
exim bug report, this setup does usually work, including on one of
your servers as you have indicated. On my end, I never had issues
between dovecot 2.1.7 and 2.2.13, using the exact same authenticator
config in exim.
See at the end of the e-mail my dovecot configuration (my
/etc/dovecot/local.conf). This configuration is included by the default
dovecot configuration (as packaged by Debian, but I think there are not
so many changes made by Debian).
I agree that it could be related to my configuration, but I don't see
how the changes I made could have altered how the auth server is working.
I'm looking at the dovecot sources and found two different
implementation for the auth protocol. One in auth-master-connection.c
and one in auth-client-connection.c. One seems to send SPID and VERSION
and wait for further commands before continuing. The other send the
complete handshake.
I think I'm connecting to a socket speaking the wrong protocol.
exim is configured to use socket /var/run/dovecot/auth-userdb
dovecot has the following configuration in 10-master.conf:
service auth {
# ... some comments removed ...
unix_listener auth-userdb {
#mode = 0666
#user =
#group =
}
}
I think I completely misunderstood how dovecot sockets were configured ...
If I set up exim to connect to auth-client instead of auth-userdb, it
fixes the problem (I get a meaningful error message, probably because
things are not configured properly elsewhere).
What I don't understand is that the socket auth-client is nowhere to be
found in the configuration. Where is it specified?
Also, I don't understand because the production server I have currently
running have the following configuration in 10-master.conf:
service auth {
unix_listener auth-userdb {
mode = 0660
user = vmail
group = vmail
}
#SASL
unix_listener auth-client {
mode = 0660
user = vmail
group = vmail
}
}
And exim is configured to use auth-client socket, and everything works.
I naively thought that I could remove auth-client and use auth+userdb
instead when I was looking at this configuration.
Could someone enlighten me how sockets are configured in dovecot?
Well, first of all auth-userdb and auth-client are completely different
things.
exim must connect to auth-client and _not_ auth-userdb.
2nd: If the config does not enlist auth-client, look at the full config:
doveconf -a
There you see all effective settings. hence, I guess you need to replicate
the setting from your running server into your local.conf in order to get
exim access permissions.
- --
Steffen Kaiser
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