[Exim] return_path and appendfile transport doesn't work

Hello,

PH> The Good News is that it is a very silly bug, and trivial to
PH> fix. I was planning on releasing Exim 3.31 later today (to fix a
PH> different bug). I will include the fix for this bug as well.

great!

PH> The second of these changes now holds the record for the fastest time
PH> from my receiving a bug report to the fix appearing in a release -
PH> less than 3 hours.

This is real phantastic support. Thank you!
And of course, thank you for providing and your work on Exim. :-)

Greetings, Thomas