address rewriting with pcre?

[Robert Brooks]

Hi,

I've looked at Postfix Address Rewriting doc, but am struggling to see 
the best way to do this. We have virtual mail recipients via mysql. Some 
of these use + addressing, however not everywhere will accept an email 
address with a + in.

So, what I'd like to do if it's possible, is rewrite f...@bar.example.com 
to bar+...@example.com.

Is this possible? Where would be the best place to do this?

Regards,

Rob