We have BM3.7SP2 running on NW6SP3. This has a single public NIC with
secondary ipaddress ( bound to it. I am trying to create a

filter exception to allow smtp on the secondary address only. The
I have setup is as follows

Source Interface: Public
Destination Interface: All
Packet Type: smtp-st
Protocol: TCP
Src Port: All
Dest. Port: 25
Stateful Filtering: Enabled
Src Addr Type: Host
Src IP Address:
Dest Addr Type: Any

The above doesn't work. If I change the Src Addr Type to Any Address
then it
does work. Dynamic NAT only is enabled on this machine and we are
using the
SMTP proxy to proxy mail to our internal server.

Where am I hoing wrong?