Yesterday, when I re-read the LMAP document, I noticed that section
4.6 "Number of queries", it says that DMP and FSV both say they fetch
their DNS data in one query. This doesn't seem quite right to me.
It is my understanding that DMP requires you to fetch a TXT record
from _smtp-client.$FQDN and also an A record at
$REV-ADDRESS.$ADDRESS-TYPE._smtp-client.$FQDN. Similarly, FSV appears
to need to fetch either an A record at _fsv.$FQDN and either a TXT
record from the same location, or another A record
$REV-ADDRESS._fsv.$FQDN.
Doesn't this mean that DMP and FSV require a minimum of 2 DNS queries?
-wayne