In the documentation for the
MaxInlineBody variable for RT 4.4.1 (see https://docs.bestpractical.com/rt/4.4.1/RT_Config.html#MaxInlineBody) it says the default is 25k.
That would seem to suggest that units other than bytes are accepted, but in my tests the only acceptable units are bytes (e.g. 25000 or 1000000, not 25k or 1m).
If that is indeed the case, the documentation should be updated accordingly.