Minimum Technical Requirements

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Overview

The following are requirements for using certain aspects of Deem services:

Supported Browsers (latest version)

Chrome
Firefox
Safari
Edge

Warning: Users should not open multiple tabs or windows of the browser for a single session using Travel and other services. When multiple tabs or windows are open, actions in one tab or window can change the session, and the other tabs or windows may become non-functional.

Supported Mobile Devices

IOS 15
Android - Version 9 and above

Operating Systems

Deem develops and QA against the following operating systems:

Windows 10+
Mac OS - OSX 11 (Big Sur), 12 (Monterey)

Calendar Versions

Many Deem services can schedule events in your calendar, such as travel reservations. Calendar integration allows Deem to directly update your calendar with the event. This feature is especially important for delegates who book on behalf of others. The following calendar versions are supported:

Calendar	Version
Microsoft Exchange	Exchange 2013 (Supported until April 11, 2023) Exchange 2016 Exchange 2019
Customer Calendar	Google Apple ICal

With Microsoft Outlook, it is possible to deploy a safe-senders list by using the Domain Controller to automatically send out those domains via a Group Policy Object (GPO) and use the GPO settings to import one or more lists from a stored text file. The domains would automatically be added to each user’s “Safe Senders” list.

URL for research: http://windowsitpro.com/article/articleid/46661/using-a-gpo-with-a-hotfix-to-deploy-a-safe-senders-list.html

If Deem IP addresses are required

Note: In disaster recovery, failover, IP changes, or some other unforeseeable situations, these IP addresses are subject to change.

208.94.216.0/21 (IP Range that Deem is the registered owner)

Junk Mail and Spam Filter Settings

Deem recommends whitelisting the following domains on the server side (such as Microsoft Exchange) and on the email client side (such as Microsoft Outlook).

Whitelist Email Domains

Please ensure the IT department has whitelisted all emails from the following domains:

For international users, the following may also be needed for international top level domains:

Note: Failure to whitelist or otherwise accommodate these email domains may cause user activation and notification (including confirmation) emails to be refused by the customer's mail server or be routed to spam/junk mail folders.

Unblock Urls

If a filter or proxy is used to restrict content accessed over the internet, the following URLs must be unblocked:

Note: Failure to unblock these URLs may result in some pages not being fully rendered.