[Bug 859102] Re: pam_unix should not always complain about failed authentication

[jlacy86]

I am also experiencing this problem on oneiric, Ubuntu 11.

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https://bugs.launchpad.net/bugs/859102

Title:
  pam_unix should not always complain about failed authentication

Status in “pam” package in Ubuntu:
  Confirmed

Bug description:
  I run a server with ubuntu lucid, pam et al 1.1.1-2ubuntu5.3.
  I used pam-auth-update to enable unix-style and ldap style authentication.
  For accounts that exist in my LDAP only, i get on every (successful!) authentication attempt the following message in auth.log:

  dovecot-auth: pam_unix(dovecot:auth): authentication failure; logname=
  uid=0 euid=0 tty=dovecot ruser=xyz rhost=127.0.0.1  user=xyz

  This appears to happen because of any of the following problems:
  1. the unix module has a higher priority than the ldap module
  2. the unix module itself logs errors even if its "control" settings (ie. the second field in common-auth) ask it to ignore such a problem
  3. the unix module is not supposed to be configured at the same time as the ldap module.

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