He also arranged for his brother Tuvale to set up a fake drug sale, which netted almost $20,000 from the buyer.
Mau'u also had Tuvale supply him with methamphetamine and cannabis through a corrupt prison guard.
He also tried to set up a supply of pseudoephedrine, a drug used in making methamphetamine.
Mau'u's appeal claimed the starting point taken by the sentencing judge was too high, given most of the offending was to feed his own drug addiction, and that it was a conspiracy charge.
The end sentence was also manifestly excessive when the prisoner's existing sentence was taken into account.
However, the Court of Appeal could find no error in the Judge's reasoning.
Justices Stevens, Asher and Williams said the starting point was appropriate, and there was no question the drugs being smuggled into prison were for on-sale.
Mau'u had also been given an "unquestionably generous" reduction to take account of his existing jail term.
The appeal was dismissed.
