Does anyone know if this is possible? Browsing around on the internet I found out that it had been put on the roadmap but that was quite a way back. Has anyone achieved this? It seems odd that such a big player in the hosting industry doesn’t offer this, as AWS does.
Also, I’m talking about reverse dns on virtual machines not the ip addresses of cloud services. I assumed it was something to do on the configuration of the linux machine, since the virtual machines have root access I thought this may have been possible, although struggling to find info on it.
It looks like Reverse DNS feature is planned but I was not able to find more details on any timeline / planned release date.
You can find out more on those features on Provide Reverse DNS for the Azure Virtual Machines as well as reverse DNS lookup proposals on Windows Azure Feature Voting website.
EDIT
As pointed out by @franzo, Windows Azure platform now support reverse DNS records at no additional cost. Reverse DNS support is for all PaaS and IaaS Cloud Services. You can find out more about that feature on Announcing: Reverse DNS for Azure Cloud Services.