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

Scott Howard scott at doc.net.au
Mon Jan 27 12:58:24 EST 2014 

And ironically, less than an hour after I send this message, the latest
message in this same thread on the NZNOG mailing list ended up in my Google
Apps spam folder...

  Scott



On Sun, Jan 26, 2014 at 4:32 PM, Scott Howard <scott at doc.net.au> wrote:

> 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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>
>
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