Non-league duo Salisbury and Grimsby will both be in the hat for the third round draw after their FA Cup second round encounter ended goalless.
The hosts started well but Grimsby had the better chances, Michael Coulson hitting the bar and home keeper Mark Scott saving well from Shaun Pearson.
The Mariners improved after the break and Coulson blazed over when it looked easier to score.
Salisbury created opportunities but failed to register a shot on target.
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Salisbury City manager Darrell Clarke told BBC Wiltshire:
"I thought for the first 15-20 minutes we started like a house on fire. We caused them all sorts of problems.
"If we'd scored when we were on top of the game we would have probably gone on to win.
"We matched them for long periods in the game.
Grimsby Town joint manager Rob Scott told BBC Radio Humberside:
"We didn't really turn up today but we're in the hat for the next round.
"There are positive signs in that we're eight games unbeaten with a number of clean sheets and we've proven that we can grind out a result when we haven't played particularly well.
"They'll now know going into the replay that it's not going to be an easy game."