[imp] IMP and IMAP

[SLKE - Fernando Seijas]

Hello,

I am trying to configurate IMP with my server IMAP but I can not login.
Please, tell me what mistake I have and tell me what is the correct configuration:

$servers['imap'] = array(
    'name' => 'IMAP Server',
    'server' => 'slke.org',
    'protocol' => 'imap/notls',
    'port' => 143,
    'folders' => 'INBOX.',
    'namespace' => '',
    'maildomain' => 'slke.org',
    'smtphost' => 'slke.org',
    'realm' => 'socios.slke.org',
    'preferred' => ''
);

My server is slke.org but I have a subdomain socios.slke.org for our members.
We want to configurate IMP to login to the username at slke.org and username at socios.slke.org email accounts
What is the configuration?

And how is possible to configurate the login page in order to put the @socios.slke.org after username in order to do not write @socios.slke.org in the username cell?
We want that our members just write their usernames and passwords.

Thank You in Advance.