ES 10.0.16.7295 Firmware available
A new Release for Email Security (and HES) is available plugging the last known log4j vulnerability, which ES wasn't affected to my knowledge, not sure on this.
As a non native english speaker I'am a bit puzzled about the following, but I hope it helps to make SPF more reliable.
Longer SPF records could cause issues with pretty printing in EDNS resulting in failures. ES-8827
Updating in progress and fingers crossed.