Millers winger Lionel Ainsworth wasted his side's best chance as he raced through on goal but poked the ball wide under pressure from Jamal Fyfield.
After not getting the win, Raynor admitted his side need to be more decisive in front of goal, saying: "It's an away point. It's a difficult place to come to, it always has been.
"On the balance of the play I thought it was even in the first half and I expected a bit more in the final third from us. We got the ball in good areas but we gave it away cheaply in the final third. We need to be a bit more decisive in that area.
"We got Lionel (Ainsworth) on the ball more in the second half to create problems. He created problems with his pace and he opened the game up for us.
"We created a lot more and maybe he should have got the goal. It's disappointing because he's a composed finisher in training, but at the end of the day it's not training. On the balance of play second half we maybe should have gone away with the three points. We should really be talking about winning the game with the chances we've created."