[Info-ingres] UNIX Hostname, any issues with hypens in the name?

[2.stevemc at gmail.com]

We are building a new UNIX box to run Ingres 10S 
and want to have the UNIX hostname as: lew-pay-t-db01  (i.e. with hyphens)

Someone was telling me that Ingres was fussy about having hyphens in the UNIX hostname.
Is this true? 
is there anything I should be aware of when setting a UNIX machine name to host Ingres?

It is Ingres 10S running on Redhat6.

TIA Steve