dovecot - Jul 2005 - Username mapping

Hello.
We're using dovecot with mysql for authentication, with postfixadmin for
the admin web interface.

We are moving users from passwd file usernames to email at domain style logins.

Is there a better way to allow both sets of usernames (old and new) to
work with dovecot than by adding extra copies of rows to the mailboxes
table and changing the username? i.e. does dovecot support some kind of
username mapping or aliasing?

Thanks a lot

nodata wrote:
> Hello.
> We're using dovecot with mysql for authentication, with postfixadmin
for
> the admin web interface.
> 
> We are moving users from passwd file usernames to email at domain style
logins.
> 
> Is there a better way to allow both sets of usernames (old and new) to
> work with dovecot than by adding extra copies of rows to the mailboxes
> table and changing the username? i.e. does dovecot support some kind of
> username mapping or aliasing?
> 
> Thanks a lot
> 
Hi,

We do the same thing.  The easiest way to do it is to set it up as 
normal, are old accounts start with 'dw' so you get a tree like this:

/Mailboxes/dw1234/Maildir/......
/Mailboxes/a-wing.co.uk/info/Maildir/......

To do this we use:
default_mail_env = 
maildir:/mailboxes/%d/%n/Maildir:INDEX=/tmp/dovecot/indexes/%d/%n
(the indexes use /tmp because the servers use an NFS file store)

The %d is ignored if empty.  Mail on the old accounts come in on 
dw1234 at our.mail.domain.com (usually forwarded from customer's real 
domain) and exim strips the domain part before delivery.

Regards
Andrew

-- 
Andrew Hutchings (A-Wing) - Linux Guru
Netserve Consultants - http://www.domaincity.co.uk/
A-Wing Internet Services - http://www.a-wing.co.uk/
Random quote 89: "A few weeks ago, a member of the audience at a [Bill] 
Gates speech in San Francisco asked simply this of the world's richest 
businessman: 'Can you make a list of things you won't be doing? ... I 
just want a little piece of something to pass on to my kids 20 years 
from now.'" - San Jose Mercury News, 26 Oct 97

On Wed, 2005-07-06 at 09:52 +0200, nodata wrote:
> Hello.
> We're using dovecot with mysql for authentication, with postfixadmin
for
> the admin web interface.
> 
> We are moving users from passwd file usernames to email at domain style
logins.
> 
> Is there a better way to allow both sets of usernames (old and new) to
> work with dovecot than by adding extra copies of rows to the mailboxes
> table and changing the username? i.e. does dovecot support some kind of
> username mapping or aliasing?
You could move all old users to user at some.domain usernames, and set
auth_default_realm = some.domain. Then if the user doesn't give the
domain part, the default realm is appended to username.

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