[Dovecot] When dovecot delivery, nested maildir (<user>/maildir/maildir) is "auto"created

[Steffen Kaiser]

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On Thu, 7 Mar 2013, Nunzio Falcone wrote:

> After I send email to utente2 via "telenet localhost 25"
>
> I return to /var/vmail/utente2 and perform "ls -la" that shows me:
> maildir
> |-maildir
>    |-cur
>    |-new
>    |-tmp
>
> but the expected results was
> |-maildir
>   |-cur
>   |-new
>   |-tmp
>
> Mar 05 19:54:35 auth: Debug: master in: USER    1 utente2/maildir/@domain.local      service=lda
> Mar 05 19:54:35 auth: Debug: master out: USER   1  utente2/maildir/@domain.local      uid=500 gid=500 home=/var/vmail/utente2/maildir/@domain.local
> Mar 05 19:54:35 lda: Debug: auth input: utente2/maildir/@domain.local uid=500  gid=500 home=/var/vmail/utente2/maildir/@domain.local
> Mar 05 19:54:35 lda(utente2/maildir/@domain.local): Debug: Effective uid=500,  gid=500, home=/var/vmail/utente2/maildir/@domain.local
> Mar 05 19:54:35 lda(utente2/maildir/@domain.local): Debug: Home dir not found: /var/vmail/utente2/maildir/@domain.local
> Mar 05 19:54:35 lda(utente2/maildir/@domain.local): Debug: maildir++: root=/var/vmail/utente2/maildir//maildir, index=, control=, inbox=/var/vmail/utente2/maildir//maildir

When I interprete lines 1 and 2 correctly, you pass "utente2/maildir/@domain.local" as username to Dovecot.
Line 3 evaluates your homedir using "%Lu" correctly, 6th line is using "%n" variable, which resembles to
"utente2/maildir/"; there you get the double "maildir//maildir" - note the 
double /, too, one from the username, one from the mail_location pattern.

For some reason, I do not know, you allow "/" in usernames, hence, they gets passed to the
path of homedir and mail location.

The only question now is, do you really send the message to:
utente2/maildir/@domain.local

or does Postfix mangles the recipient in some way?

Via SoGo you do logon with utente2 instead of 
"utente2/maildir/@domain.local", hence, there is just one "maildir" 
autocreated, because "%n" is substituted by "utente2" instead of 
"utente2/maildir/".

> From SOGO when I login the "autocreate" work well: in  root folder of 
> "utente2" I can see
> |-maildir
>   |-cur
>   |-new
>   |-tmp

> mail_location = maildir:/var/vmail/%n/maildir
> userdb {
>  args = uid=500 gid=500 home=/var/vmail/%Lu allow_all_users=yes

> dovecot unix - n n - - pipe flags=DRhu user=vmail:vmail 
> argv=/usr/libexec/dovecot/deliver -f ${sender} -d ${recipient}

- -- 
Steffen Kaiser
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