We know from the House Intelligence Committee report that the Russians were pushing a Syrian message among the other more “organic” messages. But this seems to indicate that they did get traction.

Mail bomb suspect made numerous references on Facebook to Russian associates and echoed pro-Kremlin views

• The posts showed fixations on certain subjects, including Miami sports teams, youth soccer, Native American themes and businesses Sayoc was seeking to promote. But in April 2016, after several months of not posting on Facebook, the account abruptly changed subjects to link to videos celebrating Syria’s fight against ISIS.
• “He just pops up four months later and just relentlessly shares stories about ISIS and terrorists,” said Albright. “The turn is just remarkable… He found ideas that never let go from that point on.”