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

[Tom Storey]

I think the spam filtering Ive been getting in Google Apps has been pretty
darn good.

I dont recall the last time I saw something that was quite obviously spam
come through to my inbox.

Any time something has come through that I havent been able to unsubscribe
from, marking it as spam has taken care of it pretty quickly.

Anything that has been inadvertantly caught up as spam has been pretty
quickly resolved for subsequent emails after marking it as not spam.

Certainly I have not had to worry about spam anywhere near as much since I
was running my own mail server. Wont be going back to that in any kind of
hurry, thats for sure.


On 26 January 2014 09:45, Skeeve Stevens <
skeeve+ausnog at eintellegonetworks.com> wrote:

> 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_error for 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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