eessis® Hosted Exchange

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eessis Hosted Exchange Server




Microsoft Exchange Hosted Services (EHS) offers online tools to help your organization protect itself from spam and malware, satisfy retention requirements for e-discovery and compliance and encrypt data to preserve confidentiality

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E-mail, shared calendars, & contacts

Microsoft Exchange Online is a hosted enterprise messaging solution based on Microsoft Exchange Server 2007 and provides the following:
  • Improved e-mail security
  • "From virtually-anywhere" access to e-mail for your employees
  • Enhanced operational efficiency for your IT staff
  • 25-gigabyte (GB) mailbox storage per standard license


Microsoft® Exchange Online is a hosted enterprise messaging solution based on Microsoft Exchange Server 2007. Exchange Online helps give your business the e-mail security it demands, your employees the e-mail access they want, and your IT staff the operational efficiency it needs. The service leverages our deep knowledge of Microsoft products, best practices developed with customers and partners, and our global infrastructure to deliver a world-class, mission-critical service. The Exchange Online service includes advanced e-mail features as well as calendaring, contact, and task management capabilities. Exchange Online also provides built-in spam control and virus scanning to reduce common security risks that are associated with e-mail files

Exchange Online Standard is a Microsoft Online Services offering designed for rapid service adoption by an organization. It includes a standardized Web-based administrative console that makes it easy to manage and set up services for users. It is available as a standalone service or as part of the Business Productivity Online Suite that also includes Microsoft SharePoint® Online, Microsoft Office Communications Online and Microsoft Office Live Meeting.

Features of Microsoft Online Services

Exchange Online is one of several services hosted by Microsoft and available from Microsoft Online Services. These Internet-based offerings are designed to make it easier for businesses to rapidly and cost effectively access up-to-date communications and collaboration technologies. Each service delivers business-class reliability and reduces the burden of performing routine IT management tasks such as installation, provisioning, ongoing maintenance, patches, updates, and upgrades.


Exchange Online subscribers benefit from a set of features that are common to all Microsoft Online Services offerings:

  • Secure access: Microsoft Online Services are accessed via 128-bit Secure Sockets Layer (SSL) encryption. Anyone who intercepts a communication sees only encrypted text.
  • Business continuity: Redundant network architecture is hosted at geographically dispersed Microsoft data centers to handle unscheduled service outages. Data centers act as backups for each other: If one fails, the affected customers are transferred to another data center with limited interruption of service.
  • Intrusion monitoring: Microsoft continuously monitors the Microsoft Online Services systems for any unusual or suspicious activity. If Microsoft detects such activity, it investigates and responds appropriately. In the unlikely event that a significant incident occurs, the customer is notified.
  • Security audits: Ongoing assessment of the Microsoft Online Services infrastructure ensures installation of the latest compliance policies and antivirus signatures, along with high-level configuration settings and required security updates.
  • High availability: Microsoft Online Services have a 99.9 percent scheduled uptime. If a customer’s service is affected, Microsoft Online Services offers financial remedies subject to the terms and conditions of the service level agreement (SLA).
  • Support: Web form and phone support is available 24 hours a day, 7 days a week, for the service administrator.
  • Administration Center: This easy-to-use Web site is made available to company service administrators for managing all Microsoft Online Services. After logging on to the Administration Center, service administrators can perform a number of common tasks such as adding and deleting users, adding contacts and distribution lists in Exchange Online, and creating and configuring Microsoft SharePoint® Online sites. The Administration Center is also where service administrators can download software, such as the Microsoft Online Services Sign In application, Directory Synchronization tool, and Migration tools.
  • My Company Portal: Users can log on to the My Company Portal Web site to launch Microsoft Online Services. They can access services such as e-mail, create a SharePoint site, download the Sign In application—and more.
  • Sign In application: This tool conveniently allows Microsoft Online Services end users to sign in once and access all services without being prompted repeatedly for their password.
  • Virus filtering: Microsoft Online Services helps guard against online threats. Microsoft Forefront™ Online Security for Exchange automatically removes viruses and spam in incoming and outgoing e-mail. Microsoft Forefront Security for SharePoint scans for viruses in intracompany e-mail and in all documents that reside in SharePoint Online sites.
  • Directory Synchronization tool: For subscribers with on-premises Active Directory® service deployment, this tool helps keep the on-premises Active Directory and the Microsoft Online Services directory in sync.

Microsoft Exchange Online Feature Description



Mailbox size

25 gigabytes (GB) of mail storage allocated per user

Message size limit

Up to 30 MB (including attachments)

Client computer access

Microsoft Office Outlook® 2010

Microsoft Office Outlook 2007 (SP1)

Microsoft Office Outlook 2003 (SP3)

POP Client Connectivity

Office Outlook Web Access Premium and Light

Microsoft Office Entourage® 2008 (12.1.2) for Macintosh users

Mobile device access

Windows Mobile® 6.0 and beyond devices

Nokia E series and N series devices

Apple iPhone 3.x

BlackBerry devices (requires BlackBerry Internet Service)

mailbox size

A company receives 25 GB of mailbox space for each Exchange Online user license purchased.When a service administrator creates a mailbox for a user, the administrator can apply the default mailbox size or configure the mailbox with less storage. The service administrator can assign mailbox storage to each user in the following increments: 256 MB, 512 MB, 1 GB, 2 GB, 3 GB, 4 GB, 5 GB, 6 GB, 7 GB, 8 GB, 9 GB, 10 GB, 15 GB, 20 GB, and 25 GB.

Mailbox capacity alerts

To help prevent users from exceeding their mailbox space limit, Exchange Online sends an e-mail warning to them when their mailbox reaches 90 percent of its storage limit. The warning is intended to encourage users to delete unwanted mail or request additional mailbox storage.When a mailbox reaches 100 percent of the storage limit, Exchange Online prohibits the mailbox from sending and receiving e-mail. It rejects all incoming mail and sends a non-delivery report (NDR) e-mail notification to the sender.To resume sending and receiving e-mail, the mailbox owner must bring the mailbox below the storage limit by deleting unwanted mail or requesting additional mailbox storage. After the mailbox is again able to receive e-mail, senders will have to resend any e-mail that generated an NDR notification.


Features of Microsoft Online Services

Not all mailboxes are associated with individual users. With Exchange Online a company can also create resource mailboxes for conference room scheduling. Resource mailboxes are treated as standard individual mailboxes, and the service administrator can create an e-mail alias for them. They receive and respond to scheduling requests only.

The service administrator can use the Resource Booking Attendant (RBA) in Exchange Online to automate scheduling of conference rooms and other resources. A resource mailbox can be configured to use the RBA to send Accept, Decline, or Acknowledge replies to meeting organizers. The service administrator can also choose not to use the RBA and instead designate users to accept and decline booking requests.

sign in application

The Microsoft Online Services Sign In application is installed on all users’ computers to provide a single sign-in point for Microsoft Online Services. The service administrator may deploy the Sign In application to each computer in the company, or instruct users to install it themselves from the Downloads tab on My Company Portal.

The Sign In application provides these features:

  • Automatic configuration of applications: The Sign In application automatically configures desktop applications on the end user’s computer so that they work properly with Microsoft Online Services. This saves time and trouble for first-time users and reduces support time for service administrators. If necessary, users can also reconfigure their desktop applications manually within the Sign In application.
  • Single access point for services: Instead of having to sign in to each available service, users can use the Sign In application once, and then launch service applications without any additional sign-in requests. The Sign In application lists all services that the company’s service administrator has made available to the user. The online services available to users depend on the licenses that your company purchases.
  • Password management: Users can change their service password in the Sign In application, and if their password expires, the Sign In application alerts them and offers the means to update it.

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Microsoft Exchange Hosted Services Glasgow Scotland

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