Don’t forget about the premier PBEM clubs: AAMC and IAAPA. AAMC is free and IAAPA charges a minimal fee. Both clubs have their own dice rollers (AAMC’s is provided above) and very experienced players. If you are interested in finding out how you rank against good PBEM A&A players, I would recommend checking out these clubs. The good thing about these clubs is that you can play against an opponent of any desired skill level.
AAMC: http://www.aamc.net/
IAAPA: http://www.axisandallies.net/