Thanks for offering a new mirror.
The correct place to notify us of your intent to mirror is by writing to portmgr, although this ticket is fine too. I don't see an email from you there, but I did see a request by you to subscribe to that list. Only MacPorts managers can subscribe to that list, but the general public can still send messages to it.
Instructions for how to create such a mirror are at wiki:Mirroring. Looks like you followed most of those already, but it looks like you're only mirroring our rsync "release" module. It would be more useful if you could mirror all of our rsync modules, including packages and distfiles. This will of course use much more disk space.