syslog udp traffic blocked for anti spoofing

Setup VIP for our syslog servers via UDP to the backend servers. I ran a tcpdump and I see the traffic come into the F5 and leave the F5 with the correct IP address. The problem I'm having is the data center firewall is between my F5 vlan and the syslog servers. The Firewall sees the traffic coming from the F5 vlan with the wrong IP address and blocks it for anti-spoofing. Is there anything I can do on the F5 to trick the Firewall. I'm guessing I may need to apply a rule on the Firewall to disregard anti spoofing to the syslog servers.