Fax... to file?

I see a lot of topics around about fax to mail, and how to do fax to mail, and got fax to mail working on my box…

However, I’m looking to create a backup (and eventual replacement) for a fax to file system server, it drops it on an SMB mount currently (it’s Windows, bleh).

Does anyone have any experience in this and can point my in the right direction? I’d love to configure this via the GUI if at all possible, but I guess I wouldn’t be too upset if I had to write a custom extension (considering we have a flaky two-box setup right now, and having to edit ONE file for the fax only wouldn’t be a huge deal).