The Sincil Bank result leaves the Daggers three points adrift of the play-offs, but competition is heating up after victories for Accrington and Morecambe.
Still said: "We started very slowly, but in the end we had enough chances to win by two or three goals.
"I was really pleased with the way we played. On another day it could easily have gone for us. Once we settled down we were in the ascendancy.
"We're not conceding many goals at the moment. We just need to convert a few more chances. We've got 10 games to play and the way we're playing we're capable of beating anyone."