On 1/07/20 11:20 am, Bill Cole wrote:
Can't you just fix the DNS? Use a HELO name that resolves to both IPs and give both IPs PTR records that point back to the name you use.
This won't work for FCRDNS properly. What happens is the lookup on the A record will randomly return either one or the other IP address as is appropriate for multiple DNS records as this is how round-robin DNS works. So half of the time it will return the correct IP address for the interface that you're on at the time and the other half it will return the wrong IP address causing FCRDNS to fail.
Peter
