[AusNOG] Fwd: [nznog] heads up.. gmail now checking ipv6 rdns

[Skeeve Stevens]

I just wish Google (GMail, at least on Google Apps) has decent Spam
filtering... whitelist, blacklist, foreign language blocks, etc.  It
doesn't even seem to learn very well when you mark something as spam.


...Skeeve

*Skeeve Stevens - *eintellego Networks Pty Ltd
skeeve at eintellegonetworks.com ; www.eintellegonetworks.com

Phone: 1300 239 038; Cell +61 (0)414 753 383 ; skype://skeeve

facebook.com/eintellegonetworks ;  <http://twitter.com/networkceoau>
linkedin.com/in/skeeve

twitter.com/theispguy ; blog: www.theispguy.com


The Experts Who The Experts Call
Juniper - Cisco - Cloud - Consulting - IPv4 Brokering


On Sun, Jan 26, 2014 at 5:58 PM, Seamus Ryan <s.ryan at uber.com.au> wrote:

>  I thought they started doing this about six months ago? At least that's
> what i found... Good on em i say. Its an uphill battle trying to get people
> to set their environment up to even a low standard. If a giant like google
> forces everyone to do things properly, it could certainly help in reducing
> the spams on the internets slightly. Dare they do it for ipv4??
>
> Seamus
>  ------------------------------
> From: Skeeve Stevens <skeeve+ausnog at eintellegonetworks.com>
> Sent: 26/01/2014 12:53 PM
> To: ausnog at ausnog.net
> Subject: [AusNOG] Fwd: [nznog] heads up.. gmail now checking ipv6 rdns
>
>  Important to note.... noticed by our friends on NZNOG.
>
> ...Skeeve
>
>  *Skeeve Stevens - *eintellego Networks Pty Ltd
>  skeeve at eintellegonetworks.com ; www.eintellegonetworks.com
>
> Phone: 1300 239 038; Cell +61 (0)414 753 383 ; skype://skeeve
>
> facebook.com/eintellegonetworks ;  <http://twitter.com/networkceoau>
> linkedin.com/in/skeeve
>
> twitter.com/theispguy ; blog: www.theispguy.com
>
>
>  The Experts Who The Experts Call
>  Juniper - Cisco - Cloud - Consulting - IPv4 Brokering
>
>
> ---------- Forwarded message ----------
> From: Blair Harrison <nznog at jedi.school.nz>
> Date: Sat, Jan 25, 2014 at 11:43 AM
> Subject: [nznog] heads up.. gmail now checking ipv6 rdns
> To: NZNOG <nznog at list.waikato.ac.nz>
>
>
>  Hi Folks,
>
>  Just got caught out with this on my personal box today. It looks as if
> Gmail is now checking RDNS on any inbound ipv6 smtp connections and
> rejecting with 500 error if it doesn't match.
>
>
>  example fail -
>
> SMTP error from remote mail server after end of data:
>     host gmail-smtp-in.l.google.com [2a00:1450:4008:c01::1a]:
>     550-5.7.1 [2402:6000:1000:x::x] Our system has detected that this
> message does
>     550-5.7.1 not meet IPv6 sending guidelines regarding PTR records and
>     550-5.7.1 authentication. Please review
>     550-5.7.1 https://support.google.com/mail/?p=ipv6_authentication_errorfor more
>     550 5.7.1 information. oq6si4802967bkb.182 - gsmtp
>
> So if you have ipv6 enabled on your mail servers and haven't yet set some
> RDNS for them.. now is the time.
>
>  Cheers,
> Blair
>
>
> _______________________________________________
> NZNOG mailing list
> NZNOG at list.waikato.ac.nz
> http://list.waikato.ac.nz/mailman/listinfo/nznog
>
>
>
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