Running the hostname command provides the FQDN that does match my DNS entry. Incidentally it is vcsa.mydomainname.com. I also checked the contents of the /etc/hosts file. Its contents are copied below.
#Begin /etc/hosts (network card version)
#End /etc/hosts (network card version)
#VAMI_EDIT_BEGIN
#Generated by Studio VAMI service. Do not modify manually.
127.0.0.1 vcsa.mydomainname.com vcsa localhost
::1 vcsa.mydomainname.com vcsa localhost ipv6-localhost ipv6-loopback
#VAMI_EDIT_END
Thanks for all your help!!
chris