dovecot - Nov 2007 - IMAP vs system username logging with checkpassword auth

Hi

After upgrading to dovecot 1.0.7 I noticed that the actual username is
no longer logged, but rather the system user (in my case 'vmail')
under which my virtual set-up runs. Now I'm unable to see which
virtual users log in. Any pointers on how to configure dovecot to log
the actual username given during the IMAP dialogue would be
appreciated.

My dovecot.conf includes the following:

auth default {
  mechanisms = plain
  passdb checkpassword {
    args = /var/qmail/bin/qmail-vauth
  }
  userdb prefetch {
  }
  user = auth
}

An example logfile entry:

2007-11-03 15:41:56.027191500 dovecot: Info: imap-login: Login:
user=<vmail>, method=PLAIN, rip=192.168.0.141, lip=192.168.0.10, TLS

On Sat, 2007-11-03 at 18:14 +0200, dale gallagher wrote:
> After upgrading to dovecot 1.0.7 I noticed that the actual username is
> no longer logged, but rather the system user (in my case 'vmail')
> under which my virtual set-up runs.
Upgrading from what version? I don't think I've changed anything for a
long time related to this.
> auth default {
>   mechanisms = plain
>   passdb checkpassword {
>     args = /var/qmail/bin/qmail-vauth
>   }
..
> 2007-11-03 15:41:56.027191500 dovecot: Info: imap-login: Login:
> user=<vmail>, method=PLAIN, rip=192.168.0.141, lip=192.168.0.10, TLS
It looks like your qmail-vauth changes $USER environment to "vmail",
which causes dovecot-auth to change the username internally. Since some
people really want this feature, you'll probably have to write a wrapper
checkpassword that unsets $USER before it calls Dovecot's
checkpassword-reply.


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