<html><head><style id="axi-htmleditor-style" type="text/css">p { margin: 0px; }</style></head><body style="font-size: 10pt; font-family: Arial; background-image: none; background-repeat: repeat; background-attachment: fixed;"><p>Poštovani kolega,</p><p><br></p><p>Ako vam gateway ne podržava IPv6, kako vaši korisnici i/ili mail server<br></p><p>mogu uopšte da komuniciraju sa Google mail serverom preko IPv6?</p><p><br></p><p>Pozdrav.</p><p><br></p><p>Bojan Vitnik</p><br>On Mon, 09.12.2013 08:30, "Dusan M. Vuckovic" <Dusan.Vuckovic@elfak.ni.ac.rs> wrote:<br><blockquote style="border-left: 2px solid rgb(00, 00, 204); padding-left: 4px; margin-left: 16px;"><div style="null; null;">
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<p class="MsoNormal"><span style="color:#1F497D">Hvala svima na odgovoru. </span></p>
<p class="MsoNormal"><span style="color:#1F497D">SPF record , propisan postoji , ali za IPv4. Trenutno nas gateway ne podrzava IPv6, te @MarkoZivkovic , sta dalje
</span><span style="font-family:Wingdings;color:#1F497D">J</span><span style="color:#1F497D"> .
</span></p>
<p class="MsoNormal"><span style="color:#1F497D">Ratko , mozemo li u tvom DNS-u da postavimo rekorde za nasu reverznu zonu ? Da li to resave problem , ili nece moci da nadje server, pa ni to ne resave problem ?
</span></p>
<p class="MsoNormal"><span style="color:#1F497D">Za ispadanje “glup u drustvu “ , bez brige. I ja sam rizikovao. Ni meni teorija sa klijentima ne pije vodu, ali izgleda da to resave problem . Na Exchange-u sam aplicirao fiks i to nista nije resilo. Tek kad
su klijenti to uradili isto kod sebe, proradilo je. Ajd, sad . Ko ima objasnjenje nek izvoli.</span></p>
<p class="MsoNormal"><span style="color:#1F497D">Ono sto je interesanto je da je problem samo sa @gmail.com domenom . Domeni koji su na GoogleApsps-u , bez problema prihvataju postu. Izgleda je i to kod njih u nekoj eksperimentalnoj fazi , pa je roll out bio
delimican . </span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><b><span lang="IT" style="color:#595959">Dušan Vučković</span></b><span lang="IT" style="color:#595959">
</span><span lang="SR-LATN-RS" style="font-size:8.0pt;color:#595959">M.Sc. </span>
<span lang="IT" style="font-size:8.0pt;color:#595959">MCP_ID:3342085</span><span style="color:red">|</span><span style="color:#002060">
</span><b><span lang="IT" style="color:#E36C0A">Faculty of Electronic Engineering</span></b><span lang="IT" style="color:#002060">
</span><span style="color:red">|</span><span lang="IT" style="color:gray">Head of IT</span><span lang="IT" style="color:#002060">
</span></p>
<p class="MsoNormal"><span lang="SR-LATN-RS" style="font-family:"Wingdings 2";color:gray">'</span><span lang="SR-LATN-RS" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:gray">
</span><span lang="SR-LATN-RS" style="font-size:10.0pt;color:gray">+381 18 529373</span><span lang="SR-LATN-RS" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:gray">
</span><span lang="SR-LATN-RS" style="font-size:12.0pt;font-family:Webdings;color:gray">È</span><span lang="SR-LATN-RS" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:gray">
</span><span lang="SR-LATN-RS" style="font-size:10.0pt;color:gray">+381 69 1583000</span><span lang="SR-LATN-RS" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:gray">
</span><span lang="SR-LATN-RS" style="font-family:"Wingdings 2";color:gray">7</span><span lang="SR-LATN-RS" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:gray">
</span><span lang="SR-LATN-RS" style="font-size:10.0pt;color:gray">+381 18 588117</span><span lang="SR-LATN-RS" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:gray">
</span><span lang="SR-LATN-RS" style="font-size:10.0pt;color:gray">| Aleksandra Medvedeva 14, Niš 18000, Serbia</span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> amres-info-bounces@amres.ac.rs [mailto:amres-info-bounces@amres.ac.rs]
<b>On Behalf Of </b>Bojan Vitnik<br>
<b>Sent:</b> Monday, December 9, 2013 12:11 AM<br>
<b>To:</b> amres-info@amres.ac.rs<br>
<b>Subject:</b> Re: [amres-info] Problem sa Gmail-om</p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Poštovani kolega,<br>
<br>
Koliko ja vidim problem je što ne postoji reverzna IPv6 DNS zona a verovatno ni AAAA zapis<br>
za mail server. Zašto jednostavno ne napravite reverznu IPv6 DNS zonu za vaš opseg IPv6<br>
adresa i dodate još AAAA zapis u direktnu zonu za vaš mail server i posao je rešen.<br>
Postojanje SPF se podrazumeva.<br>
<br>
S druge strane, ne vidim kako IPv6 kod klijenata može da pravi problem ako je na mail<br>
serveru potpuno ugašen IPv6. Klijenti ne šalju direktno mail-ove Google mail serveru<br>
nego preko vašeg mail servera osim ako su vaši korisnici namestili da im mail klijent<br>
koristi Google mail nalog. S druge strane, i ovo je rešivo pomoću DNS-a, doduše malo<br>
teže.<br>
<br>
Pozdrav.<br>
<br>
Bojan Vitnik, B.Sc.E.E.<br>
Mrežni i sistem administrator Fakulteta za fizičku hemiju<br>
<br>
On Sun, 08.12.2013 23:13, "Dusan M. Vuckovic" <<a href="mailto:Dusan.Vuckovic@elfak.ni.ac.rs">Dusan.Vuckovic@elfak.ni.ac.rs</a>> wrote:</span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">Pozdrav svima .</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">Javio nam se veci broj korisnika prijavljujuci problem sa slanjem poste na Gmail . Naime , posta se vraca i javlja se greska nalik ovoj :</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">mx.google.com gave this error:<br>
[2002:a063:98f::a063:98f 16] Our system has detected that this message does not meet IPv6 sending guidelines regarding PTR records and authentication. Please review
<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 information. y12si2880601wiv.74 - gsmtp </span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Tahoma","sans-serif";color:black"> </span></p>
<p class="MsoNormal"><span style="font-family:"Tahoma","sans-serif";color:black">Problem je u tome sto je Google pokrenuo prijem poste preko IPv6 protokola i dao mu je prvenstvo u odnosu na IPv4 . Detaljan opis problema mozete naci ovde: </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><a href="http://tanguy.ortolo.eu/blog/article109/google-ipv6-smtp-restrictions" target="_blank">http://tanguy.ortolo.eu/blog/article109/google-ipv6-smtp-restrictions</a></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">Resenje problema zahteva i intervenciju na strani klijenta izgleda . Mora da se iskljuci IPv6 na klijentu, a ne samo na mail serveru , a to se moze jednostavno
uraditi pokretanjem <a href="http://go.microsoft.com/?linkid=9728869" target="_blank">
OVOG Fix-a</a> koji je Microsoft dao na <a href="http://support.microsoft.com/kb/929852" target="_blank">
OVOJ stranici</a> . Tu cete naci i uputstvo kako rucno da uradite isti posao , koji je fixom automatizovan . </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">Pitanje glasi, kako cemo da resimo ovaj problem ,a ne da koristimo workaround ?
</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">Hvala
</span></p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"><b><span lang="IT" style="color:#595959">Dušan Vučković</span></b><span lang="IT" style="color:#595959"> </span><span lang="SR-LATN-RS" style="font-size:8.0pt;color:#595959">M.Sc. </span><span lang="IT" style="font-size:8.0pt;color:#595959">MCP_ID:3342085</span><span style="color:red">|</span><span style="color:#002060"> </span><b><span lang="IT" style="color:#E36C0A">Faculty
of Electronic Engineering</span></b><span lang="IT" style="color:#002060"> </span><span style="color:red">|</span><span lang="IT" style="color:gray">Head of IT</span></p>
<p class="MsoNormal"><span lang="SR-LATN-RS" style="font-family:"Wingdings 2";color:gray">'</span><span lang="SR-LATN-RS" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:gray"> </span><span lang="SR-LATN-RS" style="font-size:10.0pt;color:gray">+381
18 529373</span><span lang="SR-LATN-RS" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:gray"> </span><span lang="SR-LATN-RS" style="font-family:Webdings;color:gray">M</span><span lang="SR-LATN-RS" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:gray"> </span><span lang="SR-LATN-RS" style="font-size:10.0pt;color:gray">+381
69 1583000</span><span lang="SR-LATN-RS" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:gray"> </span><span lang="SR-LATN-RS" style="font-family:"Wingdings 2";color:gray">7</span><span lang="SR-LATN-RS" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:gray"> </span><span lang="SR-LATN-RS" style="font-size:10.0pt;color:gray">+381
18 588117</span><span lang="SR-LATN-RS" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:gray"> </span><span lang="SR-LATN-RS" style="font-size:10.0pt;color:gray">| Aleksandra Medvedeva 14, Niš 18000, Serbia</span></p>
<p class="MsoNormal"> </p>
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