While setting up Exchange 2007 in the year 2008, I had a problem with Outlook Anywhere. The answer turned out to be disabling IPV6. That was fine. Now I'm finding out the IPCalypse is predicted February 2nd, 2011 at 4AM. Maybe not right away, but eventually I could have users hitting IPV6 networks who will not be able to access Outlook Anywhere. Has the problem with Outlook Anywhere and IPV6 been fixed? Or was the problem all along that my server did not have access to a IPV6 network? Is there a document that addresses this issue? I want to know how to get this working when I'm forced to use IPV6. Thanks, TinaTina M. White Boundless Data

The IPCalypse"? That raised a smile. Dont worry. Youre probably a couple of versions away from your current version before you will be affected. "BoundlessData" wrote in message news:8569b120-752b-4d51-ac25-f059f5bc8c03... While setting up Exchange 2007 in the year 2008, I had a problem with Outlook Anywhere. The answer turned out to be disabling IPV6. That was fine. Now I'm finding out the IPCalypse is predicted February 2nd, 2011 at 4AM. Maybe not right away, but eventually I could have users hitting IPV6 networks who will not be able to access Outlook Anywhere. Has the problem with Outlook Anywhere and IPV6 been fixed? Or was the problem all along that my server did not have access to a IPV6 network? Is there a document that addresses this issue? I want to know how to get this working when I'm forced to use IPV6. Thanks, Tina Tina M. White Boundless Data Mark Arnold, Exchange MVP.

Well our users are spread out all over the country forcing us to depend heavily on Outlook Anywhere or implement it's ugly predecessor the VPN. In a podcast by ARIN's CEO, they painted a picture where Verizon is supposedly defaulting their new smart phones to IPV6 (IPV4 being optional) and it sounded like our users could very well end up on a IPV6 network while traveling. While I don't want to be a IPCalypse alarmist http://mashable.com/2011/01/22/the-internet-is-running-out-of-space-kind-of/, I do want to be prepared if there is ANY possibility that our users can end up on a IPV6 network, the Exchange server must be accessible to them at all times no matter where they are.Tina M. White Boundless Data

I think the IPCalypse / ARPAgeddon -- if any -- is still a bit further ahead than February 2nd, 2011 at 4 AM. The major players are working on a smooth transition. Here in Norway, they talk about offering IPv6 to all customers in 2012 / 2013. As to Exchange 2007 / 2010 IPv6 support, this is a confusing matter. Quoting from Microsoft Exchange Server 2010 Best Practices (Best Practices (Microsoft)) The official Microsoft support statement for IPv6 is that Exchange Server 2010 running on Windows Server 2008 or R2 requires an IPv4 address. Exchange Server 2010 is not supported in a pure IPv6 environment where you disable the IPv4 protocol (p. 83). The following Exchange Server roles can cause issues when using IPv6 addresses: [...] Client Access Server - Autodiscover and EWS services endpoints because you cannot configure an IIS binding for an IPv6 address - WCF throws a Watson exception if you try to configure it (p. 82). All in all, this should rule out Outlook Anywhere with IPv6 only. MCTS: Messaging | MCSE: S+M

That is NOT an answer to my question! I can't believe how many people are in denial! The Hurrican Electric IPV4 depletion count down is at zero. The NRO and ICANN had a press conference this morning which you can view here http://www.nro.net/news/icann-nro-live-stream. No more IPV4 blocks exist for distribution. While most of us will not feel the effects of this today. It could be several months since our ISPs and website hosts have banks of IPV4 addresses not yet utilized. The organization ARIN is encouraging the implementation of both IPV4 and IPV6 simultaneously during the transition for services that are on the public side of the internet. In harassing my website host, they seem to indicate that ISPs around the world are implementing relays so that users who get assigned an IPV6 address can access IPV4 only services without Administrator intervention. Since there isn't one single point of contact or governing organization of ISPs, I can't find out if this is really true. I suspect that not all ISPs have prepared equally and there will be some failures. This transition was forced on us early because of our appetite for internet connected electronics. I believe the original forecast for IPV4 depletion was something like 2016. These organizations have been warning us that it is coming faster for some time now. If Mark Arnold's statement that Microsoft will not fix the IPV6 issue for at least two more versions, I am very disappointed. I believe it is reasonable to request that Exchange 2010 be able to serve both IPV4 and IPV6 clients simultaneously by the end of this year. As the transition progresses, I suspect that some ISPs will not implement relays effectively and it will be up to us administrators to make sure we serve our end users with IPV6 and IPV4 simultaneously. Tina M. White Boundless Data

Well, we have actually answered your question. Outlook Anywhere is not supported on IPv6 only. AFAIK, Microsoft has made no official statement when Exchange and IIS will support IPv6 only. The background for your question should perhaps be discussed in other forums. Back to a a more technology-oriented approach, addressing some worst-case Last Days predictions: IPv6 tunnels are an option, that is transferring IPv4 type of packets over an IPv6 network.MCTS: Messaging | MCSE: S+M

The support doc for Exchange 2010 and IPV6 was recently update: http://technet.microsoft.com/en-us/library/gg144561.aspx Understanding IPv6 Support in Exchange 2010 There is also a IPV6 Forum where you may want to ask these questions as well: http://social.technet.microsoft.com/Forums/en-us/ipv6/threads and an IPV6 Blog: https://blogs.technet.com/b/ipv6/ These may be some good places to voice your concerns.

Was not aware of that updated document, but where do you see a statement about Client Access Servers and IIS, which would address Outlook Anywhere and IPv6? On the other hand it shows Microsoft is extending Exchange 2010 IPv6 support.MCTS: Messaging | MCSE: S+M

No, you did not answer my question and you are being a jerk. Tina M. White Boundless Data

Thank you! At least someone tried to address the real question.Tina M. White Boundless Data