Late goals from Abu Ogogo and Medy Elito saw Dagenham & Redbridge climb above Yeovil in League One.
The Glovers started well, but went behind when Will Antwi headed home from Danny Green's corner.
Yeovil levelled though Andy Williams, who took Owain Tudur Jones' pass and fired into the roof of the net.
But the Daggers went ahead from a breakaway Ogogo goal, before Elito raced down the right and fired a low shot home to complete the victory.
Yeovil manager Terry Skiverton told BBC Somerset: "I could sense at the end of the game the supporters were disappointed, but I'm going to break my neck to make sure that we stay in this league and we are competing better than we did today.
"This is my first tough time as a manager and we've got to be strong and stick together as a club and get through this.
"If you're in hell you're either going to stay in there or walk through it and at the moment we've got to carry on marching."
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