dovecot - Sep 2015 - 'doveadm expunge' with -A and userdb { driver = passwd }

>> [?]
>> Here's what my Gentoo-default auth-passwdfile.conf.ext says:
>>
>> passdb {
>>  driver = passwd-file
>>  args = scheme=CRYPT username_format=%u /etc/dovecot/users
>> }
>> userdb {
>>  driver = passwd-file
>>  args = username_format=%u /etc/dovecot/users
>> }
>>
>> But I don't have an /etc/dovecot/users file.  I also don't seem
to
>> have any mail user uid lower than 1000, but I do have some users above
>> 1000 which aren?t mail users (nobody, etc).
>
> Hello Grant,
>
> So as to avoid any ambiguity, could you post the output of "doveconf
-n"?

Sure, here it is:

# doveconf -n
# 2.2.16: /etc/dovecot/dovecot.conf
# OS: Linux x86_64 Gentoo Base System release 2.2
listen = 127.0.0.1
mail_location = maildir:~/.maildir
namespace inbox {
  inbox = yes
  location   mailbox Drafts {
    special_use = \Drafts
  }
  mailbox Junk {
    special_use = \Junk
  }
  mailbox Sent {
    special_use = \Sent
  }
  mailbox "Sent Messages" {
    special_use = \Sent
  }
  mailbox Trash {
    special_use = \Trash
  }
  prefix = INBOX.
  separator = .
}
passdb {
  args = *
  driver = pam
}
passdb {
  args = scheme=CRYPT username_format=%u /etc/dovecot/users
  driver = passwd-file
}
protocols = imap
service imap-login {
  inet_listener imap {
    port = 143
  }
}
ssl_cert = </etc/ssl/dovecot/server.pem
ssl_key = </etc/ssl/dovecot/server.key
userdb {
  driver = passwd
}
userdb {
  args = username_format=%u /etc/dovecot/users
  driver = passwd-file
}

- Grant

> Le 4 sept. 2015 ? 06:19, Grant a ?crit :
> 
>>> [?]
>>> 
>>> But I don't have an /etc/dovecot/users file.  I also don't
seem to
>>> have any mail user uid lower than 1000, but I do have some users
above
>>> 1000 which aren?t mail users (nobody, etc).
>> 
>> Hello Grant,
>> 
>> So as to avoid any ambiguity, could you post the output of
"doveconf -n"?
> 
> 
> Sure, here it is:
> 
> # doveconf -n
> # 2.2.16: /etc/dovecot/dovecot.conf
> # OS: Linux x86_64 Gentoo Base System release 2.2
> listen = 127.0.0.1
> mail_location = maildir:~/.maildir
> [?]
> passdb {
> args = *
> driver = pam
> }
> passdb {
> args = scheme=CRYPT username_format=%u /etc/dovecot/users
> driver = passwd-file
> }
> [?]
> userdb {
> driver = passwd
> }
> userdb {
> args = username_format=%u /etc/dovecot/users
> driver = passwd-file
> }
Thank you, Grant.

It thus appears that your server is configured to make use of system users, for
both user authentication and user lookup. That you don?t have a
/etc/dovecot/users file just means that the system is the only source for user
information.

You may find more details at
http://wiki2.dovecot.org/Authentication/MultipleDatabases.

And yes, the warning about doveadm?s -A option thus appears to be relevant in
your case.

HTH,
Axel

>>>> But I don't have an /etc/dovecot/users file.  I also
don't seem to
>>>> have any mail user uid lower than 1000, but I do have some
users above
>>>> 1000 which aren?t mail users (nobody, etc).
>>>
>>> Hello Grant,
>>>
>>> So as to avoid any ambiguity, could you post the output of
"doveconf -n"?
>>
>>
>> Sure, here it is:
>>
>> # doveconf -n
>> # 2.2.16: /etc/dovecot/dovecot.conf
>> # OS: Linux x86_64 Gentoo Base System release 2.2
>> listen = 127.0.0.1
>> mail_location = maildir:~/.maildir
>> [?]
>> passdb {
>> args = *
>> driver = pam
>> }
>> passdb {
>> args = scheme=CRYPT username_format=%u /etc/dovecot/users
>> driver = passwd-file
>> }
>> [?]
>> userdb {
>> driver = passwd
>> }
>> userdb {
>> args = username_format=%u /etc/dovecot/users
>> driver = passwd-file
>> }
>
> Thank you, Grant.
>
> It thus appears that your server is configured to make use of system users,
for both user authentication and user lookup. That you don?t have a
/etc/dovecot/users file just means that the system is the only source for user
information.
>
> You may find more details at
http://wiki2.dovecot.org/Authentication/MultipleDatabases.
>
> And yes, the warning about doveadm?s -A option thus appears to be relevant
in your case.

In that case it sounds like my best options would be to either
continue expunging old mail with a separate line for each user or
switch to /etc/dovecot/users for user lookup and maintain a list of
mail users there so I can use doveadm -A.  How can I switch to
/etc/dovecot/users?

- Grant