How do I ignore case for mail usernames and domains for pop / imap / webmail?

[RaphaelB]

How can I turn off the case sensitivity for mail accounts (both account name and domain) so that user@domain.com allows someone to log in with User@domain.com and user@DOMAIN.com will still authenticate for user@domain.com?

Note: I do NOT want passwords to ignore case, only the username and domain.

I've looked around and in the plesk admin panel and the courier imap conf files and wasn't able to find any settings that change this. The one hint I found is that courier - if I understand it correctly, just passes the authentication data through to the auth backend, which is authpsa - plesk's authentication backend? How can I change that?

Thanks!

 

[IgorG]

We have already such feature request and I hope it will be implemented in the one of nearest Plesk version.

BTW, Concerning that can and that should not be case sensitivity it is possible to look at this document (there are links to rfc): http://email.about.com/od/emailbehindthescenes/f/email_case_sens.htm

The local part (to '@' character) should (MUST) be case sensitivity according RFC 2821
The domain part should not be case sensitivity (from this RFC).