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


********************************************************************
If you wish to stop receiving messages from EZPROXY-L or otherwise amend your preferences,
you can do so <a href="https://www.oclc.org/forms/internet-subscription.en.html">here</a>.
Or email [email protected] including the relevant text below in the body of the email:
• To unsubscribe: "unsubscribe EZPROXY-L"
• To receive EZPROXY-L in digest form: "set EZPROXY-L digest"
• To set your options to no mail: "set EZPROXY-L nomail"
• To receive these messages in the future "set EZPROXY-L mail"
To contact the list owners directly please send your message to [email protected].
If you unsubscribe from EZPROXY-L, you will no longer be able to participate in any of its features, including the public forum.
To unsubscribe from all OCLC marketing email communications
(including all OCLC listervs, OCLC Connect emails, OCLC event notifications, product/service/cooperative updates and newsletters),
please email us at [email protected].