[Dovecot] dovecot and vmailmgr

[Timo Sirainen]

On Wed, 2006-05-10 at 12:51 +0200, Mij wrote:
> $HOME_LOCUSER depends on the domain part of the user's email. The  
> relation
> is held in /var/qmail/control/virtualdomains .
> However, on the local part (virtual_username) some rewriting is done  
> on the username, as
> dots are replaced by ":".
> So in the end j.doe at foo.com becomes "~mxfoocom/users/j:doe".
> 
> Now, var-expand does not support any rewriting. I patched it by  
> adding another
> modifier, m_str_replace(), which replaces REPLACE_SOURCE with  
> REPLACE_TARGET
> in a given string. By defining REPLACE_SOURCE to '.' and  
> REPLACE_TARGET to ':'
> one accomplishes the vmailmgr username rewriting. This modifier is  
> applied with "P",
> so:
> default_mail_env = maildir:%h/users/%Pn

Could you change the dots in the username already in
auth_username_translation? If vmailmgr expects them as '.' you could
change them back to ':' in your script. A bit ugly, yes :)

> A better, general solution would be for dovecot to implement some  
> kind of general
> rewriting, say with regexps and sed-like replacement rules, or with  
> an external process
> in a cgi fashion.

Hmm.. Actually I think it's already possible for you to return a new
username in the checkpassword script by setting USER environment. You
might need "EXTRA=USER" environment too.

> With this patch, dovecot gets the correct path for any user mailbox.  
> However, there's a bug
> in dovecot storage modules (both maildir and mbox) which truncates  
> the path in the first ":",
> when expecting ":INBOX" etc specifiers:

Yes.. However I'm not sure if I want to do anything about this. I just
didn't expect usernames to contain ':' characters, and adding extra
checks to make this sort-of-work just feels like it's going to break at
some point, more or less worse.

In Dovecot 2.0 framwork I already got rid of the ':' characters
completely by making INBOX, INDEX, etc. separate settings.

I guess I could give the "Maildir" parameter to checkpassword script
anyway always.
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