Christophe Berra's close-range finish in the 81st minute and David McGoldrick's free-kick six minutes from time, his 16th goal of the season, cancelled out strikes from Barnsley pair Chris O'Grady and Tomasz Cywka to earn a 2-2 result.
The draw extended the Tractor Boys' unbeaten run to four games and moved them to within three points of the Sky Bet Championship top six, while leaving relegation-threatened Barnsley four points adrift of safety.
He said: "I'm frustrated, rather than disappointed. I think in the second half we had our backs to the wall for long periods, the wind took its toll, just like it helped us in the first half.
"We knew we were going to be on the back foot, particularly with the strike force they've got but I think the two goals (conceded) were the disappointing part, if anything.
"The performance wasn't disappointing; it was just a little bit frustrating at times. We defended too deep and instead of taking a forward step, we took a backward step and that helped them.
"The manner in which Ipswich got the goals was fortunate but I would have thought from Mick's point of view, he would have thought they deserved it, which is understandable.
"But when you get two-nil up, you think, from our point of view, see the game out better."
- Sports & Recreation
- Christophe Berra
- David McGoldrick
- Tomasz Cywka