Daggers could have been in front early on but Jon Nurse fired over before Rochdale took the lead when Kallum Higginbotham lashed home in the 28th minute.
The hosts were level midway through the half, though, courtesy of a clinical Ben Strevens finish in the 33rd minute – his 18th of the season.
Glen Southam missed a great chance to put Daggers in front when he fired wide of an open goal before an end-to-end second half saw both side’s almost grab a winner.
Paul Benson volleyed just wide and had a close-range effort blocked by Tommy Lee for the home side.
Higginbotham should have made it 2-1 but blasted well over while Tony Roberts did tremendously well to block Chris Dagnall’s one-on-one.