paolo:
You can check out the logs in /var/log/messages. When registering a new user entry you'll see lines like:
Aug 5 20:30:51 jabber jabberd/c2s[180]: [7] [192.168.123.113, port=1266] connect
Aug 5 20:31:11 jabber jabberd/c2s[180]: [7] created user: user=telackey; realm=test4.redbudcomputer.local
Aug 5 20:31:11 jabber jabberd/c2s[180]: [7] registration succeeded, requesting
user creation: jid=telackey@test4.redbudcomputer.local
Aug 5 20:31:11 jabber jabberd/sm[178]: created user: jid=telackey@test4.redbudcomputer.local
And when logging in:
Aug 5 20:31:17 jabber jabberd/c2s[180]: [7] [192.168.123.113, port=1275] connect
Aug 5 20:31:18 jabber jabberd/c2s[180]: [7] SASL authentication succeeded: mechanism=DIGEST-MD5; authzid=telackey@test4.redbudcomputer.local
Aug 5 20:31:18 jabber jabberd/c2s[180]: [7] bound: jid=telackey@test4.redbudcomputer.local/Home
Aug 5 20:31:18 jabber jabberd/c2s[180]: [7] requesting session: jid=telackey@test4.redbudcomputer.local/Home
Aug 5 20:31:18 jabber jabberd/sm[178]: session started: jid=telackey@test4.redbudcomputer.local/Home
Did you notice any trouble when registering the user account before attempting to login? Any messages?
Glad to help if I can to get you going.