Darlington boss Dave Penney has vented his fury at his side's poor defending in the last two games.
Speaking to the Northern Echo Penney, whose side lost to Chester and only narrowly beat Grimsby the previous week, said: "That's four sloppy goals in two games and that's not like us.
"I know Hereford didn't win but I'm not concerned about them, I'm only concerned about us and we're not going to achieve automatic promotion if we're going to concede goals like we did. That's two weeks in a row that we have gone 2-0 behind and then started playing.
"But our strengths have been keeping it tight, making sure it's not an open game and then as the game goes on we would get stronger with our superior fitness levels."
Penney also ruled injured striker Pawel Abbott out for the remainder of the League fixtures: "Pawel over stretched for the ball, pulled his hamstring and it looks a bad one. We're looking at four to six weeks so that probably rules him out of the normal season. That's a major blow, not just losing, but losing Pawel too."