Clearnet IMAP

Hi there.

I am trying to setup IMAP for a clear.net.nz address for a friend. They have the Mail+ service.

All settings appear correct. With username and password correct, they work fine for POP and will log into IMAP server just not the outgoing server.

imap.clear.net.nz (143, noSSL)

smtp.clear.net.nz (25, no SSL and same authentication as incoming)

I am unable to complete setup and I believe this may be because I do not use Clear as my ISP however this seems unusual as the reason for using IMAP will be for mobile use.

Any help would be appreciated, changing ISP is not an option.