I tried to entered in the Web admin page of the Unity Connection the smtp domain : cuc7lab.7lab.csb.etg.ca and I always get an error Domain name is not valid. If I change for cuc7lab.aaa.csb.etg.ca, it is ok.
cuc7lab is the host name
7lab.csb.etg.ca is the domain
If put anything without a number in the domain, I did not get that error.
I really do not understand.