Hi, I am trying to help a customer of Ovid who is using Squid (I know nothing about the squid software and configuration so this may be a very basic question). Can anyone help with recommendations to configure Squid to allow access to ovidsp.ovid.com and fix below error? Problem getting to Http://ovidsp.ovid.com ERROR received: ================== ERROR The requested URL could not be retrieved The following error was encountered while trying to retrieve the URL: http://ovidsp.ovid.com/autologin.html Unable to determine IP address from host name "ovidsp.ovid.com" The DNS server returned: Timeout This means that the cache was not able to resolve the hostname presented in the URL. Check if the address is correct. Your cache administrator is root. ================== Below are the recommendations for Ovid: Ovid recommends that you allow users to connect to all *.ovid.com domains, to ensure uninterrupted access for users. If that is not possible, we recommend that you allow access to the following service URLs, depending on which products you subscribe to. Ovid Resource Service URLs: These are the only entry-point addresses that should be bookmarked and distributed to users. http://ovidsp.ovid.com https://ovidsp.ovid.com http://pt.wkhealth.com https://pt.wkhealth.com http://gateway.ovid.com https://gateway.ovid.com (optional SSL access) http://ssolver.ovid.com http://clinicalresource.ovid.com http://stats.ovid.com http://linksolver.ovid.com http://clineguide.ovid.com http://nursing.ovid.com Below addresses should NOT be bookmarked or distributed to users. http://ovidsp.tx.ovid.com* http://ovidsp.uk.ovid.com* http://graphics.tx.ovid.com https://graphics.tx.ovid.com http://graphics.uk.ovid.com https://graphics.uk.ovid.com http://acs.tx.ovid.com https://acs.tx.ovid.com http://acs.uk.ovid.com https://acs.uk.ovid.com http://ovidfr.ovid.com http://ovidcn.ovid.com *If you wish to bookmark OvidSP, please use http://ovidsp.ovid.com only. Including "tx" or "uk" could compromise your access to OvidSP. Network traffic between Ovid and your site All network traffic from Ovid to your site should be in response to requests which users have generated. Thus, if your site is using a stateful packet inspection (SPI) firewall, you should not have to open any ports on your firewall. Email is the exception, and you should allow TCP/25 from the address ranges listed below. Should you use a non-SPI firewall, you will need to allow ephemeral (high numbered) TCP port access from the following IP address ranges. In order to allow Ovid the ability to expand/upgrade service without impacting connectivity, the entire range should be allowed. 160.109.106.x 160.109.107.x 160.109.108.x 160.109.109.x 160.109.112.x 160.109.113.x 160.109.114.x 160.109.98.x 194.66.22.128/26 (194.66.22.128 - 194.66.22.191) To ensure proper delivery of email, customers are encouraged to explicitly whitelist our mail server IP addresses and e-mail accounts: 160.109.98.52, 160.109.107.38, 194.66.22.174, 194.66.22.175, webman@xxxxxxxx, autorun@xxxxxxxx, wkh-noreply@xxxxxxxxxxxxxxxxx Best regards, Shirley Shirley Farquhar Dir. Customer Engagement (Asia/Pacific) Wolters Kluwer Health Medical Research Lippincott, Williams & Wilkins Ovid Technologies Level 18, 9 Hunter Street Sydney, NSW 2000 Australia +61 (0)2 9276 6666 tel +61 (0)2 9231 1255 fax support@xxxxxxxx Need more help? To find a Freecall Number for your Country... please check here: http://ovid.com/PhoneTech For frequently asked Technical Support Questions/Answers... please check here: http://ovidsupport.custhelp.com + Free OvidSP Widget Do you want to: . Increase your usage on OvidSP? . Facilitate access from your website or intranet? . Jumpstart a user to a search session or browse in OvidSP? Contact Ovid Technical Support for a personalised widget created for your OvidSP institutional access! mailto:Support@xxxxxxxx Tell us how we did Confidentiality Notice: This email and its attachments (if any) contain confidential information of the sender. The information is intended only for the use by the direct addressees of the original sender of this email. If you are not an intended recipient of the original sender (or responsible for delivering the message to such person), you are hereby notified that any review, disclosure, copying, distribution or the taking of any action in reliance of the contents of and attachments to this email is strictly prohibited. If you have received this email in error, please immediately notify the sender at the address shown herein and permanently delete any copies of this email (digital or paper) in your possession.