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

[Tim March]

I'd be curious to hear how/if many others have spam issues w/ Google
Apps/Gmail..

My experience has been really positive. I've got ~ 5 domains on Google
Apps, including my company, and literally can't remember the last time I
got unsolicited (eg. not from a site/forum/vendor/whatever I'd signed up
for...) spam. No funky gmail settings, no funky mail client
(Thunderbird) configuration, it just seems to work.




T.

On 26/01/14 8:45 PM, Skeeve Stevens 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
> <mailto:skeeve at eintellegonetworks.com> ; www.eintellegonetworks.com
> <http://www.eintellegonetworks.com/>
> 
> Phone: 1300 239 038; Cell +61 (0)414 753 383 ; skype://skeeve
> 
> facebook.com/eintellegonetworks
> <http://facebook.com/eintellegonetworks> ; <http://twitter.com/networkceoau>linkedin.com/in/skeeve
> <http://linkedin.com/in/skeeve> 
> 
> twitter.com/theispguy <http://twitter.com/theispguy> ;
> blog: www.theispguy.com <http://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
> <mailto: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 <mailto:skeeve+ausnog at eintellegonetworks.com>
>     Sent: 26/01/2014 12:53 PM
>     To: ausnog at ausnog.net <mailto: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
>     <mailto:skeeve at eintellegonetworks.com> ; www.eintellegonetworks.com
>     <http://www.eintellegonetworks.com/>
> 
>     Phone: 1300 239 038; Cell +61 (0)414 753 383 ; skype://skeeve
> 
>     facebook.com/eintellegonetworks
>     <http://facebook.com/eintellegonetworks> ; <http://twitter.com/networkceoau>linkedin.com/in/skeeve
>     <http://linkedin.com/in/skeeve> 
> 
>     twitter.com/theispguy <http://twitter.com/theispguy> ;
>     blog: www.theispguy.com <http://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
>     <mailto: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 <mailto: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
>     <http://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
> 
> 
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> 
> 
> 
> 
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