Alex McQueen's first-half double for Dagenham & Redbridge condemned Harrogate Town to only their second league defeat all season.
The onrushing full-back turned a pulsating encounter in the hosts' favour, first taking a long ball in his stride and lifting delicately over the advancing Town keeper James Belshaw on 39 minutes.
He repeated the trick, in off the post, from another break to leave the promotion-chasing visitors scratching their heads.
Harrogate were the more proactive after the break, but Joe Leesley's shot drifted over.
The buccaneering midfielder did make the Daggers sweat in the last 10 minutes when he broke forward from the left and unleashed a fierce shot in off bar, but there was no further drama.
Match report supplied by the Press Association.