They would never make it as easy as unchecking a box. :-) -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Adam Farage Sent: Thursday, September 19, 2013 8:17 PM To: <[email protected]> Cc: [email protected] Subject: Re: [Exchange] RE: Google rejecting email
I thought you can turn off ipv6 if you do it properly, not just unchecking the IPv6 box on the NIC settings? No? Sent from my iPhone > On Sep 19, 2013, at 7:44 PM, "Kurt Buff" <[email protected]> wrote: > > It's not that, exactly. It's that if you turn off IPV6, you're pretty > much no longer in a supported configuration, for some of their > technologies at least. > > And, interestingly, you can turn off Teredo, and might well wish to do > so, without turning off IPv6. It's a transitional technology, and MSFT > will be phasing it out at some point, along with ISATAP and probably > NAT64. > > Kurt > > On Thu, Sep 19, 2013 at 4:22 PM, Micheal Espinola Jr > <[email protected]> wrote: >> Riiight... leave unnecessary services running, because something >> unrelated might break. I understand the concern, but I'd still focus >> minimizing problem vectors over something that may or may not happen. >> If it happens, then deal with that on a case-by-case basis. I've not >> encountered any issues regarding disabling IP6 across the board - >> but, honestly, its crap like that that brings us together here, so >> I'm not pretending weird things can't and don't happen. >> >> I'm inclined to think that Microsoft wants IP6 running for all the >> stats they can gather via the Teredo connections. >> >> -- >> Espi >> >> >> >>> On Thu, Sep 19, 2013 at 3:54 PM, Kurt Buff <[email protected]> wrote: >>> >>> Erm - not so much... >>> >>> >>> http://blogs.technet.com/b/netro/archive/2010/11/24/arguments-agains >>> t-disabling-ipv6.aspx >>> and >>> >>> http://blogs.technet.com/b/ipv6/archive/2007/11/08/disabling-ipv6-do >>> esn-t-help.aspx >>> and perhaps >>> >>> http://thommck.wordpress.com/2011/02/08/offline-files-versus-vpn-a-k >>> -a-the-case-of-the-missing-work-online-button/ >>> >>> Kurt >>> >>> On Thu, Sep 19, 2013 at 3:07 PM, Micheal Espinola Jr >>> <[email protected]> wrote: >>>> :-) >>>> >>>> I just gotta throw-in here that if you don't use it - it should be >>>> disabled anyway. >>>> >>>> -- >>>> Espi >>>> >>>> >>>> >>>>> On Thu, Sep 19, 2013 at 1:57 PM, Kurt Buff <[email protected]> wrote: >>>>> >>>>> <gasp> >>>>> >>>>> Disable IPv6? >>>>> >>>>> Heresy... >>>>> >>>>> :) >>>>> >>>>> Kurt >>>>> >>>>> On Thu, Sep 19, 2013 at 1:01 PM, Michael B. Smith >>>>> <[email protected]> >>>>> wrote: >>>>>> I found it easier to disable IPv6 core networking, both input >>>>>> rule and output rule. >>>>>> >>>>>> Ymmv. >>>>>> >>>>>> Sent from my Windows Phone >>>>>> ________________________________ >>>>>> From: Adam Farage >>>>>> Sent: 9/19/2013 10:55 PM >>>>> >>>>>> >>>>>> To: New Exchange Admin List ([email protected]) >>>>>> Subject: [Exchange] RE: Google rejecting email >>>>>> >>>>>> I actually had someone post this on Reddit (/r/exchangeserver is >>>>>> a subreddit forum thing I created about 3 months ago) who >>>>>> experienced the same issues, and how he resolved it: >>>>>> >>>>>> >>>>>> >>>>>> http://www.reddit.com/r/exchangeserver/comments/1kw7cc/gmail_reje >>>>>> cting_mail_from_exchange_because_sender/ >>>>>> >>>>>> The TL;DR (too long/dont read) version is that he had to run this: >>>>>> >>>>>> " >>>>>> >>>>>> I opened a Command Prompt as Administrator and did: >>>>>> >>>>>> netsh >>>>>> interface >>>>>> 6to4 >>>>>> set state disabled >>>>>> .. >>>>>> teredo >>>>>> set state disabled >>>>>> >>>>>> " >>>>>> >>>>>> Check it out though. Friendly crowd, a few MCSM's and MSFT folk >>>>>> and a Dell guy here and there. >>>>>> >>>>>> We need more MVP's on there (cough cough) >>>>>> ________________________________________ >>>>>> From: [email protected] >>>>>> <[email protected]> on behalf of John Cook >>>>>> <[email protected]> >>>>>> Sent: Thursday, September 19, 2013 3:35 PM >>>>>> To: New Exchange Admin List ([email protected]) >>>>>> Subject: [Exchange] Google rejecting email >>>>>> >>>>>> So I have a user that is sending out mail to a number of Gmail >>>>>> accounts but one of them bounces with this error The sender does >>>>>> not meet basic ipv6 sending guidelines of authentication and rdns >>>>>> resolution of sending ip This has not happened to anyone else and >>>>>> I can email to my Gmail account fine. The recommended fix is to >>>>>> create a reg key and disable IPv6 which I am reticent to do. >>>>>> Exchange 2010 SP3 on 2008R2, I do not have a static >>>>>> IPv6 >>>>>> address on the server nor have I ever noted one in our MX records. >>>>>> Anyone >>>>>> else ever run across this? >>>>>> >>>>>> TIA >>>>>> >>>>>> John W. Cook >>>>>> Network Operations Manager >>>>>> Partnership For Strong Families >>>>>> 5950 NW 1st Place >>>>>> Gainesville, Fl 32607 >>>>>> Office (352)-244-1610 >>>>>> Cell (352) 215-6944 >>>>>> MCSE, MCP+I, MCTS, CompTIA A+, N+, Security+ VSP4, VTSP4 >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> ________________________________ >>>>>> >>>>>> CONFIDENTIALITY STATEMENT: The information transmitted, or >>>>>> contained or attached to or with this Notice is intended only for >>>>>> the person or entity to which it is addressed and may contain >>>>>> Protected Health Information (PHI), confidential and/or >>>>>> privileged material. Any review, transmission, dissemination, or >>>>>> other use of, and taking any action in reliance upon this >>>>>> information by persons or entities other than the intended >>>>>> recipient without the express written consent of the sender are >>>>>> prohibited. This information may be protected by the Health >>>>>> Insurance Portability and Accountability Act of 1996 (HIPAA), and >>>>>> other Federal and Florida laws. Improper or unauthorized use or >>>>>> disclosure of this information could result in civil and/or >>>>>> criminal penalties. >>>>>> Consider the environment. Please don't print this e-mail unless >>>>>> you really need to. > >
