+### TLSA (2 0 1)
+### A server with a nonverifying cert and no TLSA
+### A server with a verifying cert and no TLSA
+### A server with two MXs for which both TLSA lookups return defer
+### A server lacking a TLSA, required
+### A server lacking a TLSA, requested only
+
+******** SERVER ********
+### TLSA (3 1 1)
+### TLSA (3 1 2)
+### Recipient callout
+### TLSA (2 0 1)
+### A server with a nonverifying cert and no TLSA
+### A server with a verifying cert and no TLSA
+### A server with two MXs for which both TLSA lookups return defer
+### A server lacking a TLSA, required
+### A server lacking a TLSA, requested only