We all know about the Gardening bans already. This is not meant to be a QQ post. This is a warning based on how it seems SE is auto-jailing real players and confusing them with RMTs.
From Lobivopis on Alla Forums:
Proud Beard - FFXIclopedia, the Final Fantasy XI wiki - Characters, items, jobs, and moreAs an experiment I made a trial account (on a laptop, on a connection other than my home DSL because I'm paranoid). Went outside, fought a few things till I got a crystal.
Went back into mines, NPCed a single wind crystal to Proud Beard. Logged off.
Checked back later that night. LM-17. It seems that NPCing things to that galka, even a single crystal, is an instant ban.
Do not NPC shit to him.
EDIT (ty Mayareira): Possibly limited to only trial accounts or level 1 mules? Still why risk it?
EDIT2: Seems limited to trial accounts only