I have been naded an unusual issue, at least in my experience.
We have extremely important emails being sent from the UK via an MPLS setup, and they are using Private DNS entries. Our SPam and Email servers require rDNS or the emails are blocked. We whitelisted and IP address for them yesterday but that did not seem to help.
This has been escalated to top priority as these emails are for our CEO and COO. What can I do from my end to ensure that the emails can be received and delievered?
I have about four hours to correct this as the senders are on UK time and I am on EST time, so if anyne can help me I would be most gratefull.