Hi!

I'm sorry that I haven't responded before, it's been very busy catching up to $DAYJOB since getting back.

Now the next step would be to change the namespace and make it more general to accommodate the ARC capability. That is the module now provides the capability for ARC protocol implementation but still retains its 'DKIM' namespace. Since this would involve quite a few changes, and could easily break the setup, I would like your thoughts on this if there are any good practices to follow here.

I don't understand what you're worried about. Of course if you change all the names, especially with some sort of automatic process, there's a pretty good chance of introducing typos. We fix them as we find them, that's all.

The way I can think of doing this is to grep all files and change the names and then clear all the cache files.

Do you mean __pycache__? That will happen automatically for all files with updated API calls. If you haven't updated the source to use the changed API, the calls will break anyway. The only time this is a worry is if you repurpose an existing name to different semantics, and the answer there is "don't do that," because it's problematic anyway. But these will be new names, so shouldn't cause that kind of problem.

Re interop:

I have a server with a fixed IP which could just pipe mail to a Python script that reads it and passes the message to the ARC module for processing. Then the script can send it back out if necessary.