Reloading dovecot after certificate renewal?

[@lbutlr]

Is it enough to issue a `service restart dovecot` when a certificate renews or do I need to service stop/start?

-- 
"A thousand years ago we thought the world was a bowl. Five hundred
years ago we knew it was a globe. Today we know it is flat and round
carried through space on the back of a turtle. Don't you wonder what
shape it will turn out to be tomorrow?" [Lord Vetinari]