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

Mon Jan 27 11:32:27 EST 2014

I use Google Apps for 2 different personal domains (including one that's
close to 20 years old!), and we also use it for our corporate email.

In general, catch rate is good. What they don't detect as spam, if you
leave it sitting in your inbox for long enough will probably magically
disappear off to the spam folder which shows that they also do spam
filtering after initial delivery which is fairly unique from what I've seen.

If I have a complaint, it's on the false positive side.  I probably rescue
on average about 5-10 messages per week from my Spam folder.  In fairness,
I subscribe to a number of mailing lists including several anti-spam/mail
delivery/etc style lists, and they seem to trigger fairly heavily on the
body contents in some of those email.  The Full Disclosure list also has
similar problems.  It's rare (if ever) that I have had a person-to-person
email go into my spam folder.

I've worked for 3 anti-spam companies over the years so I have a good idea
of what good and bad anti-spam looks like, and I'd probably give Google a
solid "B" - certainly not the best out there, but still far from the worst.

  Scott

On Sun, Jan 26, 2014 at 4:13 PM, Tim March <march.tim at gmail.com> wrote:

>
> 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
> >
> >
> >     _______________________________________________
> >     NZNOG mailing list
> >     NZNOG at list.waikato.ac.nz <mailto:NZNOG at list.waikato.ac.nz>
> >     http://list.waikato.ac.nz/mailman/listinfo/nznog
> >
> >
> >
> >
> >
> > _______________________________________________
> > AusNOG mailing list
> > AusNOG at lists.ausnog.net
> > http://lists.ausnog.net/mailman/listinfo/ausnog
> >
>
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