Gardai are to accompany postal deliveries to O'Malley Park in Limerick from today.
The move follows attacks on postmen. One had a gun pointed at him, and another was hospitalised after he was beaten with an iron bar.
The postmen withdrew their services to the housing estate last week, and more than 500 houses in the Southill estate were left without a delivery.
Following a meeting between An Post, gardai and the estate management committee, organised by the Labour TD Ms Jan O'Sullivan on Friday, gardai agreed to accompany the postmen.
According to a spokesman for An Post, staff have been subjected to a number of assaults over the past two years.
Supt Willie Keane of Roxboro Garda station said this anti-social behaviour would not be tolerated and said that after a series of assaults on a postman before last Christmas a man was now serving a lengthy sentence.