Anyone from the Telstra Bigpond network admin on list able to help out with reverse DNS issues we are starting to see with clients who have recently migrated to the Telstra NBN network where clients mail is being rejected due to reverse DNS lookup issues.
The issue has only recently reared its ugly head and is able to be resolved by logging into the custdata portal to update RDNS records but this particular business account has an issue accessing the IP address range associated with the account. The 1800 number suggested to call has zero clue about reverse DNS records and is the typical terrible Telstra outsourced support. See: "Primary target IP address responded with: "450 4.7.1 Client host rejected: cannot find your reverse hostname, [xxx.xxx.xxx.xxx]." Attempted failover to alternate host, but that did not succeed. Either there are no alternate hosts, or delivery failed to all alternate hosts." Cheers, Mark.
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