It installs Ver 1.2x
I booting up a dev machine and I got this in gmail on a forward before I installed and configured.
After I get
I’m impressed 
Thanks for the software. Will add to my current server.
The problem I was having with postsrsd 1.12, it was rewriting envelope senders on mail that shouldn’t have been touched (locally-generated mail, not just forwards).
Any chance that 2.0.11 handles this better?
My understanding is that both versions can do this. For version 1.x use the configuration SRS_EXCLUDE_DOMAINS= A comma-separated list of local domains that should not be rewritten.
For version 2.x you can use a file to list the domains so it can be configured in a more automated way.
e.g.
sudo virtualmin list-domains --with-feature mail --name-only > /etc/postsrsd.domains
then specify that file in your config
domains-file = “/etc/postsrsd.domains”
The domain with the most users has one user that forwards to gmail. :-\
But the domain you are rewriting is the external sender sending from outside to your local domain.