Re: DNS blacklisting

If your EZProxy server is linux, could you try to run

dig academic.oup.com @1.1.1.1

and post the response?

Kun



*From:* Fuller, David <[email protected]>
*Sent:* Friday, September 20, 2019 10:10 AM
*To:* Kun Lin <[email protected]>
*Cc:* [email protected]
*Subject:* Re: [EZPROXY-L] DNS blacklisting



Hello Kun,

Thanks for responding.  This isn't an EZ-Proxy issue so I apologize for the
noise on this list.  But I can't think of a better brain trust than this
one.

I have tried using public DNS, such as 8.8.8.8 in my IP configuration.



One other detail is that our campus isn't routing IPv6 and but IT has told
me it isn't a factor...and OUP was unfazed when I mentioned that.  We're
starting to conclude that one of the ISPs is at fault but they only respond
to specific requests from specific parties...and they keep booting it
around.  Normally its up to folks like us to find the "smoking gun" but I
can't see what they can see.  I'm not looking forward to announcing a
cancellation of  the OED and DNB.



On Fri, Sep 20, 2019 at 12:36 PM Kun Lin <[email protected]> wrote:

Have you tried to have EZProxy server use an external DNS server? E.g.
1.1.1.1 or 8.8.8.8

Kun



*From:* EZproxy List <[email protected]> *On Behalf Of *Fuller, David
*Sent:* Friday, September 20, 2019 8:39 AM
*To:* [email protected]
*Subject:* [EZPROXY-L] DNS blacklisting



Hello,

This isn't an EZ-Proxy issue but it seems like a good place to ask:



We have been unable to access our Oxford University Press subscriptions
since some time in July.  Our DNS requests are not resolving from within
our IP range.  We can get to the site using raw IP.  Appeals to OUP and the
ISPs involved have yielded no resolution...no one admits to DNS blocking.



Our domain union.edu is on one or two blacklists, possibly due to our main
website (hosted externally) being on a 'suomispam' list.  I believe it
means 'suspected of spam.'  But our IT dept told me that our IP range is
what matters, not our domain name.



Has anyone had experience like this?  or suggestions to investigate
further?  Where might our domain name be part of a policy?  Do ISPs choose
blacklists which list domains?  We are considering canceling these valuable
resources but this is unprecedented to my knowledge.







David Fuller

Systems and Applications Librarian

Union College

Schenectady, NY

518-388-6621


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