[Dovecot] Issue after upgrading to Ubuntu Server 11.10

[Chris Vanden Berghe]

Hi all,

After upgrading to Ubuntu Server 11.10 my mail setup stopped working.
The error message I get is:

lda: Error: userdb lookup: connect(/var/run/dovecot/auth-userdb)
failed: Permission denied (euid=5000(vmail) egid=5000(vmail) missing
+r perm: /var/run/dovecot/auth-userdb, euid is not dir owner)

Does anybody have an idea how to solve this?

Thanks,
Chris.

---
# 2.0.13: /etc/dovecot/dovecot.conf
# OS: Linux 3.0.0-12-generic x86_64 Ubuntu 11.10 ext3
auth_verbose = yes
log_timestamp = "%Y-%m-%d %H:%M:%S "
mail_location = maildir:/var/vmail/%u
mail_privileged_group = mail
maildir_stat_dirs = yes
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope
encoded-character vacation subaddress comparator-i;ascii-numeric
relational regex imap4flags copy include variables body enotify
environment mailbox date
passdb {
  args = /etc/dovecot/dovecot-sql.conf
  driver = sql
}
plugin {
  fts = squat
  fts_squat = partial=4 full=10
}
protocols = imap
service auth {
  unix_listener /var/spool/postfix/private/auth-client {
    group = postfix
    mode = 0660
    user = postfix
  }
  unix_listener auth-master {
    group = vmail
    mode = 0600
    user = vmail
  }
}
service imap-login {
  inet_listener imap {
    address = localhost
    port = 143
  }
  inet_listener imaps {
    address = *
    port = 993
  }
}
ssl_cert = </etc/ssl/private/dovecot.pem
ssl_key = </etc/ssl/private/dovecot.pem
userdb {
  args = uid=5000 gid=5000 home=/var/vmail/%u
  driver = static
}
protocol imap {
  mail_max_userip_connections = 50
  mail_plugins = fts fts_squat
}
protocol lda {
  mail_plugins = sieve
}