Orient fell to just their third league defeat at Dagenham & Redbridge's Chigwell Construction Stadium on Boxing Day.
Josh Koroma's second-half opener was cancelled out by two late goals from Alex McQueen and Ben Nunn.
Dagenham & Redbridge got us underway at Victoria Road and it was the hosts who almost took the lead when Liam Gordon’s cross dropped at the feet of Conor Wilkinson who was excellently denied by Dean Brill 4-yards from goal.
Orient grew in to the game and had a couple of half-chances early on. Sam Ling’s drilled cross was caught by Elliott Justham, before Josh Koroma’s first-time shot from distance proved routine for the ‘keeper.
James Alabi’s hard-work off the ball almost paid off when he stole possession from Manny Onariase and ran through on goal but Justham in the Daggers’ net was alert to come off his line and smother the danger.
After half an hour of play, James Brophy’s reverse pass found Bonne inside the box but the forward could only fire his effort into the side-netting.
It was certainly all Orient towards the end of the first half with the Daggers only posing a threat on the counter attack.
Eight minutes remained when Charlie Lee’s long throw dropped at the feet of Bonne whose acrobatic effort was blocked before it crossed the line. The rebound found Craig Clay, however the midfielder hit the first-time effort wide from close range.
Alabi again, hustled the ball from the Daggers back line and crossed for his partner Bonne, but our top scorer saw his effort well saved by the legs of Justham.
The Daggers hit Orient on the counter attack, Wilkinson was picked out 12-yards from goal with only Brill to beat however the O’s stopper unbelievably got a hand out to save the effort.
The final attempt of the half was a speculative shot on goal from range by skipper Lee as Paul Howard blew his whistle.
Orient got the second half underway, Ekpiteta was picked out from Brophy’s corner but despite being unmarked, the defender couldn’t direct the ball beyond Justham.
The hosts were under mountains of pressure as the O’s attacked well. Head Coach Justin Edinburgh made his first change after 62 minutes when Matt Harrold replaced James Alabi.
Again, the Daggers posed a threat on the counter attack but Orient defended their box well. Firstly, Widdowson stole the ball from McQueen as the attacker advanced on goal and looked dangerous. Secondly Lee raced back to head a loose bouncing ball back to Brill.
Josh Koroma found the net for the O’s after 72 minutes. Clay picked out the forward on the edge of the box, he had the option to play in Sam Ling on the overlap but decided to go it alone and poke the ball beyond Justham for the opener.
The Daggers drew level soon after however, Angelo Balanta’s initial shot was well saved by Brill but only into the path of McQueen who tapped home.
The hosts struck again ten minutes later when Ben Nunn found the back of the net via a deflection at the far post.
Despite falling behind, Orient continued to look dangerous on the attack. Brophy’s deep cross found Bonne at the far post but a combination of the post and Justham kept the ball out.
Bonne came close again moments later when his header from Ling’s cross dropped just wide of the target in what proved to be the final chance of the match.
ORIENT: Brill, Ling, Ekpiteta, Coulson, Widdowson, Brophy, Lee (Gorman 65), Clay, Koroma, Alabi (Harrold 62), Bonne
SUBS: Sargeant, Lawless, Happe
GOALS: Koroma (73)
DAGENHAM: Justham, Nunn (C), Gordon, McQueen, Clark, Balanta, Goodliffe, Phipps, Wilkinson, Munns (Harefield 79), Onariase
SUBS: Moore, Wright, Kandi, Mullings
BOOKED: Onariase (52), Wilkinson (90+2)
GOALS: McQueen (77), Nunn (87)
REFEREE: Paul Howard
ATTENDANCE: 3,694 (1,421)