Using SRS in production

Hello,

I'm posting here, 'cause srs-discuss (mentioned at: http://www.openspf.org/Forums) bounced while subscribing.

I'm in the need of deploying srs in production:
We're running a small site (debian, postfix as mta), that uses alias adresses via postfix'es virtual alias maps. Some aliases forward to external domains (eg. @gmail.com, @gmx.com), that perform spf checking. All virtual alias maps are stored in ldap (by that: if mail is received via smtp, postfix performs an ldap search in order to find all receivers).

In theory, srs can be implemented using a filter (for postfix) or using another mta as smarthost (having srs-capabilities already built in) - am I right?
Using google I found:
- http://www.libsrs2.org/patch/postfix-libsrs2-2.1.4-1.patch that seems quite old. Neither debian-security support is provided nor integration into postfix (upstream) is done yet.
- http://www.libsrs2.org/srs/Mail-SRS-0.31.tar.gz that might be used with postfix this way: http://www.postfix.org/FILTER_README.html - but I'ven't found an example config yet (however, a debian package exists)

So, what's your way of implementing srs?

Thanks in advance,
Keep smiling
yanosz