Portal doesn't start with LDAP server down

Hello,

for our Portal (7.0 SP12) we have configured Kerberos authentication against LDAP servers (MS AD) in two different domains. Everything works fine and as configured.

Now we had the problem that one of the LDAP servers was not available, and the Portal wouldn't start, though the other LDAP server is available.

Is there any place in the configuration to have the Portal come up though one of the two LDAP servers is not available?

Thanks,

Ingrid