On Thu, Sep 25, 2008 at 03:06:10PM +0200, Matteo Niccoli wrote:
> Wietse Venema ha scritto:
> >Look at the virtual(8) delivery agent. It uses lookup tables
> >to map a recipient to a pathname, and to look up the UID/GID
> >information. Such tables can be generated programmatically.
> >
> >http://www.postfix.org/virtual.8.html
> >http://www.postfix.org/VIRTUAL_README.html
>
> So is not possible attach a simple script that receive as stdin
> the email address, return on stdout the mailbox pathname, so
> the virtual deliver agent write on that path?
The virtual(8) delivery table uses lookup tables to find the mailbox
location.
Postfix lookup tables include:
- Indexed files, e.g. Berkeley DB hash/btree or CDB.
- LDAP
- MySQL, PgSQL
- additional tables reported by "postconf -m".
If you use a non-Postifx "VDA", such as "maildrop" (or dovecot's delivery
agent) or deliver via LMTP, the external code may support additional
lookup mechanisms.
A table mechanism is much more efficient than (multiple for shell scripts)
fork/exec for every lookup.
--
Viktor.
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