Forum OpenACS Q&A: How to allow user login to email account without key in Unix User name at behind?

Hi,

Currently my unix user name as chunoon, if i create one user name as oon, then if i want to login to email account i need to key in user name as: oon.chunoon.

How can i allow user just key in as oon instead of oon.chunoon?

Any setting available?

Please advice,

Best Regards,
Chun Oon