What does the Service temporarily not available mean

Dear All I just create the new domain with delegate administrator and none of the users in this domain are able to login to the server, all my users keep recieving Service temporarily not available Best regards Mohammad
[247 byte] By [m-meskarian] at [2007-11-26 10:57:26]
# 1
Hi,Have you enabled the domain for calendar, mail?e.g.commadmin domain modify -S mail -S cal -H <default mail host>login id: <admin user>login password: <admin password>dns domain name: <domain>Regards,Shane
shane_hjorth at 2007-7-7 3:10:44 > top of Java-index,E-Mail, Calendar, & Collaboration,Sun Java System Messaging Server...