Dagenham continued their seemingly relentless march towards the Conference title with a demolition of Southport.
The visitors were 2-0 by half-time through Jonathan Boardman's smart finish and Glen Southam's 12-yard shot.
They had a penalty just after the hour mark and though Southport keeper Paul Harrison kept out Ben Strevens' effort, Sam Saunders steered home the rebound.
The home side cut the deficit through Michael Powell's 20-yard effort but Chris Moore headed home to make it 4-1.
Southport: Harrison, Birch, Hocking, Lee (Dugdale 76), Rowland, Duffy (Tait 55), Holland, Blakeman, Baker, Gray, Newby (Powell 76).
Subs Not Used: Bagnall, Paterson.
Goals: Powell 83.
Dag & Red: Roberts, Foster , Uddin, Boardman, Griffiths, Saunders (Wallis 80), Southam, Leberl, Sloma (Lawson 62), Strevens (Moore 67), Benson.
Subs Not Used: Eyre, Cole.
Booked: Benson, Lawson.
Goals: Boardman 7, Southam 42, Saunders 66, Moore 87.
Ref: D Richardson (West Yorkshire).