<div dir="ltr">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.</div>
<div class="gmail_extra"><br clear="all"><div><div dir="ltr"><div><br>...Skeeve</div><div><br></div><div><div><b style="font-size:13px;font-family:Calibri">Skeeve Stevens - </b><span style="font-size:13px;font-family:Calibri">eintellego Networks Pty Ltd</span></div>
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<br><br><div class="gmail_quote">On Sun, Jan 26, 2014 at 5:58 PM, Seamus Ryan <span dir="ltr"><<a href="mailto:s.ryan@uber.com.au" target="_blank">s.ryan@uber.com.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div>
<div style="font-size:11pt;font-family:Calibri,sans-serif">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??<br>
<br>
Seamus</div>
</div>
<div dir="ltr">
<hr>
<span style="font-size:11pt;font-family:Calibri,sans-serif;font-weight:bold">From:
</span><span style="font-size:11pt;font-family:Calibri,sans-serif"><a href="mailto:skeeve+ausnog@eintellegonetworks.com" target="_blank">Skeeve Stevens</a></span><br>
<span style="font-size:11pt;font-family:Calibri,sans-serif;font-weight:bold">Sent:
</span><span style="font-size:11pt;font-family:Calibri,sans-serif">26/01/2014 12:53 PM</span><br>
<span style="font-size:11pt;font-family:Calibri,sans-serif;font-weight:bold">To:
</span><span style="font-size:11pt;font-family:Calibri,sans-serif"><a href="mailto:ausnog@ausnog.net" target="_blank">ausnog@ausnog.net</a></span><br>
<span style="font-size:11pt;font-family:Calibri,sans-serif;font-weight:bold">Subject:
</span><span style="font-size:11pt;font-family:Calibri,sans-serif">[AusNOG] Fwd: [nznog] heads up.. gmail now checking ipv6 rdns</span><br>
<br>
</div>
<div>
<div dir="ltr">Important to note.... noticed by our friends on NZNOG.<br clear="all">
<div>
<div dir="ltr">
<div><br>
...Skeeve</div>
<div><br>
</div>
<div>
<div><b style="font-size:13px;font-family:Calibri">Skeeve Stevens - </b><span style="font-size:13px;font-family:Calibri">eintellego Networks Pty Ltd</span></div>
<div>
<div><span style="font-family:Calibri;font-size:13px"><a href="mailto:skeeve@eintellegonetworks.com" target="_blank">skeeve@eintellegonetworks.com</a> ; <a href="http://www.eintellegonetworks.com/" target="_blank">www.eintellegonetworks.com</a></span><font>
<p style="font-family:Calibri;font-size:13px;margin:0px">Phone: 1300 239 038; Cell +61 (0)414 753 383 ; <a>skype://skeeve</a></p>
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<span style="color:rgb(0,32,96);font-size:13px">Juniper - Cisco </span><span style="color:rgb(0,32,96);font-size:13px">- Cloud</span><span style="color:rgb(0,32,96);font-size:13px"> </span><span style="color:rgb(0,32,96);font-size:13px">- Consulting</span><span style="color:rgb(0,32,96);font-size:13px"> </span><span style="color:rgb(0,32,96);font-size:13px">-
IPv4 Brokering</span></div>
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<br>
<div class="gmail_quote">---------- Forwarded message ----------<br>
From: <b class="gmail_sendername">Blair Harrison</b> <span dir="ltr"><<a href="mailto:nznog@jedi.school.nz" target="_blank">nznog@jedi.school.nz</a>></span><br>
Date: Sat, Jan 25, 2014 at 11:43 AM<br>
Subject: [nznog] heads up.. gmail now checking ipv6 rdns<br>
To: NZNOG <<a href="mailto:nznog@list.waikato.ac.nz" target="_blank">nznog@list.waikato.ac.nz</a>><br>
<br>
<br>
<div dir="ltr">
<div>
<div>Hi Folks,<br>
<br>
</div>
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.<br>
<br>
<br>
</div>
example fail - <br>
<br>
SMTP error from remote mail server after end of data:<br>
host <a href="http://gmail-smtp-in.l.google.com" target="_blank">gmail-smtp-in.l.google.com</a> [2a00:1450:4008:c01::1a]:<br>
550-5.7.1 [2402:6000:1000:x::x] Our system has detected that this message does<br>
550-5.7.1 not meet IPv6 sending guidelines regarding PTR records and<br>
550-5.7.1 authentication. Please review<br>
550-5.7.1 <a href="https://support.google.com/mail/?p=ipv6_authentication_error" target="_blank">
https://support.google.com/mail/?p=ipv6_authentication_error</a> for more<br>
550 5.7.1 information. oq6si4802967bkb.182 - gsmtp<br>
<br>
<div>So if you have ipv6 enabled on your mail servers and haven't yet set some RDNS for them.. now is the time.<br>
<br>
</div>
<div>Cheers,<br>
Blair<br>
<br>
</div>
</div>
<br>
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</blockquote></div><br></div>