krb5.conf domain_realm question

[Frederic Medery]

Hello,

My internal DNS domain is lan.domain.pri
the users email addresses are user at domain.com

to symplify connection I'd like to have REALM = DOMAIN.COM
so the kinit user = user email address

Is it correct to say can I put in the krb5.conf :

[domain_realm]
.lan.lexum.pri=DOMAIN.COM
lan.lexum.pri=DOMAIN.COM


Or do you have another trick :-)

Thanks !!!