password modification rules?

[AlaskanWolf]

for the end user, whats the exact rules for changing a password?

heres my thoughts, am i right?

? Must be at least 5 characters long ?
? Must be less then 15 characters ?
Must have at least 1 CAPITAL letter
Must have at least 1 Number
No Dictionary words

[bdraco]

passwd will try to prevent you from choosing a really bad password, but it isn't foolproof; create your password
wisely. Don't use something you'd find in a dictionary (in any language or jargon). Don't use a name (including
that of a spouse, parent, child, pet, fantasy character, famous person, and location) or any variation of your per-
sonal or account name. Don't use accessible information about you (such as your phone number, license plate, or
social security number) or your environment. Don't use a birthday or a simple pattern (such as backwards, followed
by a digit, or preceded by a digit. Instead, use a mixture of upper and lower case letters, as well as digits or
punctuation. When choosing a new password, make sure it's unrelated to any previous password. Use long passwords
(say 8 characters long). You might use a word pair with punctuation inserted, a passphrase (an understandable
sequence of words), or the first letter of each word in a passphrase.

[AlaskanWolf]

well i know all that, my main question is

Alot of customers are complaining that they are unable to change passwords or if they do change it, they cant access their cpanel anymore.

Is there a minimum and maximum amount of characters a password should be set to?

IE:

Must be at least XX characters long
Must be less then XX characters

This way we can state on the password change page the rules for changing a password......how long....how short...etc...