Published letters from remote settlement (7)
I believe the answer is:
outpost
'remote settlement' is the definition.
(I've seen this before)
'published letters' is the wordplay.
'published' becomes 'out' (I've seen this in other clues).
'letters' becomes 'post' (I've seen this before).
'out'+'post'='OUTPOST'
'from' is the link.
(Other definitions for outpost that I've seen before include "Small camp some distance away from the main army" , "Remote military site" , "Small group of soldiers" , "Distant military camp" , "Remote settlement" .)