Puzzle 633. Palindromes & Pandigitals

The issue of detecting the palindromes that are product of pandigitals has been studied extensively in the always interesting pages of World!of Numbers by my friend Patrick De Geest & his readers (see particularly the Plate 115).

As a matter of fact Frank Rubin, on January 2012, has produced one solution (and currently remains as the only known, as far as I know) but himself recognizes that this is neither the smallest nor the largest possible:

2067945831 x 2758436091 x 3581704962 = 20431106772402320427760113402

Here we ask specifically to find the smallest & the largest palindrome formed by the product of three pandigitals.

Q1. Get the smallest palindrome multiplying three ten-digits pandigitals (0 to 9)

Q2. Get the largest palindrome multiplying three ten-digits pandigitals (0 to 9)

Q3. Redo Q1 & Q2 for the nine-digits pandigitals (1 to 9)