jviotti, the reason BOOL was not changed to bool sooner was because it would break ABI compatibility. So on Mac for example, they had to wait until the x86_64 to arm64 to finally do it.
There are many servers still not using DKIM, as it requires a server/software update. But SPF is super easy, requiring only DNS changes. Could probably do as you suggest looking at only SPF.
Where do you find a firmware updater for macOS? Only instructions I see require connecting the printer to the public internet, which I'd rather not do.
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