skip to content

IT Help and Support

University Information Services

Exchange Online Protection (EOP) is a spam and malware filter available as part of the Exchange Online service. It is currently set to assess whether email is spam via both EOP's own Spam Confidence Level ruleset and the SpamAssassin scores assigned by PPSW. Any item of mail that is ranked at a value of five or higher from either of these checks is sent to a central quarantine area, where it is retained for 15 days before being deleted. This setting is equivalent to the settings used by Hermes.

Quick link: Go to your personal quarantine page >


There is no way to disable Exchange Online's quarantine function, but there are two ways to deal with messages that have been quarantined.

Notification email from

If any messages addressed to you are held in quarantine, you will get a notification email from listing any messages that have been quarantined in the last 24 hours, e.g.:

Sample quarantine messge


Although you could just click the 'Release' or 'Report' links in this email, to be particularly cautious in guarding against potentially fraudulent emails, we strongly advise you to manage your quarantined messages via your personalised web page:

How to use your personal Exchange Online quarantine admin web page

Your personal quarantine web page lists all the messages that have been withheld over the last 15 days (even after you have released them to your inbox). Go here: >

You will see a page that looks something like this, showing all messages quarantined within the last 15 days, even if you have released them to your inbox:



Review the items in your quarantine and just ignore any junk messages. If you want to keep any messages you have two choices:

  1. Quickly release a message to your inbox with a single click
  2. Release a message to your inbox and train Exchange Online that it is not junk (it's only one extra click, and worth doing)

How to release messages to your inbox (without reporting them as 'not junk')

Highlight a message and click the envelope icon to release it to your inbox (this doesn't educate Exchange Online that it is 'not junk', and other messages from the same sender may get quarantined in future):

quarantine2 envelope

Tip: To select multiple messages for release, you can hold down CTRL and click multiple messages or use the [CTRL + A] to select all.

How to release messages to your inbox and educate Exchange Online that they're 'not Junk'

It's worth taking the time to report messages as 'not junk' – you're helping Exchange Online to learn which messages you want to receive and, over time, this will improve the quality of its spam filtering so you'll have to deal with fewer quarantine notifications:

  1. Highlight the message(s) and click the pencil icon:

    quarantine2 pencil


  2. In the dialog box, click the link to Release selected message(s) and report as false positive 


  3. Click the Close button.

UIS Service Desk

UIS Service Status

Phone padded  Service status line: (01223 7)67999
Website  Sign up for SMS/email status alerts
Website  Read major IT incident reports

UIS bITe-size bulletin

A regular newsletter aimed at the University's IT community, highlighting service and project news from UIS.

Sign up >

Latest news

University Wireless Service maintenance: Tuesday 21 September, 08:00–09:00

16 September 2021

The University Wireless Service will be undergoing essential maintenance between 08:00 and 09.00 on Tuesday 21 September while we apply a security software patch. This is a security update to ClearPass, which provides Wireless Service network access control. We're not expecting any disruption to service, but it should be...

Mailing list migrations from Mailman to Sympa

31 August 2021

We intend to migrate all remaining lists associated with colleges from Mailman to Sympa during the week commencing 13 September 2020. The current total is 1,567. How this will affect users of the mailing list management service Most mailing list subscribers shouldn't notice any difference. During the switchover, there will...

Managed Zone Service closedown and migration to Mythic Beasts

24 August 2021

The Managed Zone Service (MZS) is being shut down, and its data content migrated to a commercial provider, Mythic Beasts. There will be no interruption to the service, but MZS users in institutions will need to make arrangements to retain management access to their zones. What is changing? UIS set up the MZS many years ago...