Mitel SME Server V5 with ServiceLink Guía de usuario descargar pdf (Pagina 81)

Chapter 18. Webmail

If you wish, you can conﬁgure your SME Server V5 with ServiceLink so that users can access their e-mail via a web interface. Once webmail is

enabled, users will be able to access their e-mail from the local network or anywhere in the world via the Internet using any standard web browser

(provided it supports Javascript and tables, which almost all browsers do).

For added security, the server supports the use of Secure Socket Layer (SSL) connections. When your users connect using SSL, all communication

between their browser and your web server is securely encrypted to prevent eavesdropping.

Note: The speciﬁc program we use for webmail is the Internet Messaging Program (IMP). If you would like more information about IMP, you can

visit the project web site at: http://www.horde.org/imp/

If you intend to enable webmail, you should consider whether your users will use webmail exclusively or will use webmail part of the time (for

example, when travelling) and a regular e-mail client the rest of the time. If they plan to use webmail and another client, they should make sure that

the other client uses the IMAP protocol. If they use POP3, their e-mail messages will be pulled down from the server into their local e-mail client

and will therefore not be visible when the user logs into webmail. If IMAP is enabled on the local client, the messages will remain on the server and

will be visible both from the local client and via webmail. (For more information on IMAP and POP3, read the earlier section in Chapter 7.)

A second issue is that using webmail will affect the performance of your server. We recommend that you evaluate your server hardware if you plan

to use webmail. (Note that webmail can always be disabled later if you ﬁnd that your system is not performing well.)

18.1. Enabling Webmail On Your System

Because the use of webmail can be resource-intensive, the server ships with webmail disabled by default. To enable the use of webmail, perform the

following steps:

1. Connect to the server manager and login as the admin user.

2. Click on Other e-mail settings and scroll down to the section where you have the option to Enable/Disable Webmail. You now have two options:

• Enabled (secure HTTPS access only) - Allows users to connect only through a secure SSL connection. This is strongly recommended

because a regular HTTP connection transmits your mail account password across the network (or Internet) in plain, unencrypted text.

• Enabled (HTTP or HTTPS) - Allows your users to connect through a secure or an insecure web connection.

After you perform these steps, your users should be able to connect and use webmail.

18.2. Starting Webmail

To use webmail, a user ﬁrst needs a valid user account and password on your server. Next, the user opens up a web browser and points it to your

server using an address resembling the following URL:

https://www.tofu-dog.com/webmail/

The https in the URL indicates this connection uses SSL encryption and provides a secure communication session.

Note: The exact address used in the URL will depend on how you have conﬁgured your server. In the example above, www.tofu-dog.com points to

the server located at The Pagan Vegan and https indicates that they are using secure communication using SSL encryption. If you choose to

provide insecure access, which we do not recommend, the URL would begin with http instead of https. You will need to provide your users with

whatever URL will get them to your server.

Note that if your server is behind another ﬁrewall, that ﬁrewall will need to allow trafﬁc through on TCP port 443 in order for SSL connections to

take place.

18.3. Logging In

Once connected, a user will immediately be confronted with a login screen similar to that shown in the screen below. From this screen you can read

the help menu (by clicking on the link for New User Introduction at the top of the page) or login with your normal network user ID and password.

Note that IMP supports a wide variety of languages for users for whom English is not their native language. (Or who have some desire to have

menus in a different language!)

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