The most common misconfiguration problem I see with pop or imap accounts is that people put login@eskimo.com instead of just login for their username.

Recently, a customer with an AT&T phone, model unknown at this time, was unable to change it because the phone did so automatically.

I’ve made a change the Dovecot configuration that strips off the ‘@eskimo.com’, for authentication purposes, so if you have had this problem for similar reasons, your phone should now work with our mail service.