

If your user name starts with A - F,
the POP Account field should read username@mail1.nni.com
If your user name starts with G - M,
the POP Account field should read username@mail2.nni.com
If your user name starts with N - S,
the POP Account field should read username@mail3.nni.com
If your user name starts with T - Z,
the POP Account field should read username@mail4.nni.com