Church official comments about receiving kiss (6)
I believe the answer is:
sexton
'church official' is the definition.
(I've seen this before)
'comments about receiving kiss' is the wordplay.
'comments' becomes 'notes' (note is a kind of comment**).
'about' says the letters should be written backwards.
'receiving' means one lot of letters goes inside another.
'kiss' becomes 'x'.
'notes' in reverse letter order is 'seton'.
'seton' going around 'x' is 'SEXTON'.
(Other definitions for sexton that I've seen before include "Church official" , "One looks after church and churchyard" , "Church bell ringer and gravedigger" , "Sacristan" , "One is responsible for church building" .)