Hi All,We have configured Adobe campaign v6 in-house and using our firm wide relay server for sending the emails.Following are configuration we have done: But after this change we are seeing currently experiencing following problem:1) While sending emails adobe MTA is sending mails to only one server but relay host abc.y.com resolves to 3 hosts.2) Even on sending 10k emails we are getting error like 421 4.7.0 abc1.y.com closing connection.3) Now our email throughput is way less then compar...