What CBV doesn't awnser
- Did this email come from SenderA?
- Is SenderA a spammer?
- Is MTA2 an open relay? (except if MTA2 ==MTA1)
- And other questions (please add)
By the way, you can use this test web page to try the CBV and SPF.
Go ahead and try way with different combinations of parameters.
I will be interested to see if you find some false positives.
TIP: Select High Verbosity Logging to see everything.
Hector Santos, Santronics Software, Inc.