SquirrelMail help



I have 3 email addresses set up. admin, postmaster and stephanie

I can login to SquirrelMail with the admin address, but I cannot login with either of the other two. I’ve tried changing the password to make sure that’s right, but no luck.
I CAN login to the mailbox manager with each of the addresses, but I cannot get into the mailbox itself with the postmaster & stephanie address.

I cannot for the life of me figure out what the problem is so I am looking for suggestions.

The hosting is through Dreamhost, if that helps or makes any difference. I am a bit of a novice so I don’t know.