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The Spamhaus Zen lists in Janet Janet makes available to all organisations with a Janet connection a maintained copy of the Spamhaus lists SBL, XBL and PBL, and the Zen list which is the union of those three. This document is for the information and guidance of those who manage or administer e-mail services within Janet organisations. If you think Janet is blocking your mail
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A list of Registrars that currently support Jisc domains (ac.uk/gov.scot/gov.wales/llyw.cymru). For the list of approved gov.uk registrars, please see: https://community.jisc.ac.uk/library/janet-services-documentation/govuk-approved-registrar-list The data is currently under review to show which registrars support 2FA.
The URIBL List in Janet Janet has taken out subscriptions for the multi.uribl.com list on behalf of all Janet customer organisations. This allows Janet to replicate the list and make it available to all organisations on Janet. The details of the multi.uribl.com list can be found at: http://www.uribl.com How to use the Janet URIBL list
DNSWL.org in Janet Janet subscribes to a DNS allow lists with dnswl.org on behalf of the Janet community, and allows access to this allow lists to all organisations with a Janet connection. The details of the allow lists can be found at:
If you are outside Janet and you believe a Janet organisation is blocking mail from you, please read this note before recording a complaint. A Janet mail server is blocking me. Why? Many Janet organisations use the Janet DNS deny lists (Spamhaus Zen) to refuse mail connections from listed IP addresses. Janet endorses this use but does not manage the content of the lists concerned. To find whether your mail server is on the list, fill in its IP address at
This is the submission of the JNT Association, trading as Janet, to the Joint Committee on the draft Communications Data Bill. Janet is the UK’s National Research and Education Network, a high-speed private data network that connects all universities, colleges, research organisations and schools networks to each other and to the public Internet.
​ Published: 12/09/2016 Updated: 21/12/2023 and 21/02/2025 Configuring Cisco ISE for eduroam Contents Published Documentation Configuration Notes ISE Distributed Deployments Sending operator name (with ISE 2.0) 1. Published Documentation
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What Overlapping Channel Problem? In the UK, the area of the wireless spectrum set aside for the use of 802.11b/g wireless networking devices is the ISM (Industrial, Scientific and Medical) band between 2.400 GHz and 2.497 GHz. In the UK this is subdivided into 13 channels of 25 MHz. In the US, only the first 11 of these channels are available – a fact with implications for UK deployments (see ‘WAG’s Advice’ below).