There are a couple of issues related to making an e-mail service open to the public. Some of them are listed below. Accountability You must have end user agreements and procedures that deal with misuse of the interface.
Performance The SquirrelMail requirements are not large, but certain PHP modules are required if you want a fast system. You need to remove plugins that can increase the load at your server, and provide server side alternatives. For example, stock filters plugin should not be enabled on larger systems. Scalability Your system should be able to extend when the current server can't deal with the load. You will have to use at least two different internet providers in order to get reliable internet connection.
Experience You need to understand how SquirrelMail works. You will need that knowledge in order to customize the interface to suit your site, combine the stock and third party plugins, and write your own plugins you will most likely need at least one non-existent plugin or interface customization. Who will take care of that? If you have a mail system, you most likely have users with mail addresses.
Those users and addresses are defined in a user database, which is accessible by all other system part for verification purposes. Some software solves more than one task. What about SquirrelMail then?
Where does it fit into the picture? Basically there are two different kinds of MUA: the kind you install on your own computer, i. SquirrelMail belongs to the latter category, while Microsoft Outlook, Mozilla Thunderbird, and several others belong to the former. SquirrelMail is a MUA, and nothing more. There is no SquirrelMail mail service. Just because SquirrelMail is the part that the end users see, some end users think that SquirrelMail is the complete system.
Why do people make that mistake? The answer is branding. There are several products at the market which can act as the parts. Which of these products are used in the Hotmail case? Neither do the Hotmail end users. Others only provide services to people who are already connected to the Internet, such as web based mail services. Hotmail is that latter kind of ISP. In the context of this document, schools and employers providing mail services to the faculty, students, and their employees are also considered ISPs.
In order to use SquirrelMail you must create a configuration file. Default configuration should adjusted to match your setup. Main things that should be checked are: Default domain 2. Type of IMAP server. See next chapter about selecting IMAP server. You might want to change: Organization Preferences 1. Organization Preferences. Read the chapter Customizing SquirrelMail for more tips on how to make your SquirrelMail installation blend with your site. In order to set SquirrelMail according to your server's requirements you might have to set more than 10 different SquirrelMail options.
SquirrelMail simplifies modification of these settings by providing special configuration command. Value that is set in IMAP "Server software" configuration option can fix search issues in EIMS or hmailServer, provide workarounds for some folder subscription errors in mercury32 IMAP server, but it does not affect system folder names, folder prefix, delimiter and other specific configuration options.
See chapter about Presets for more information about server specific settings. Unless the administrator changes the authentication methods, SquirrelMail will default to the "classic" plain text methods. If SMTP server uses different username and password for authentication, since 1. Since 1. PHP 4. If you use PHP 4. See PHP bug SquirrelMail 1. Secure IMAP servers use tcp port by default. Secure SMTP servers use tcp port by default. These extensions work by enabling encryption on plain text service ports.
You need root to sniff the loopback interface, and if you don't trust root, or an attacker already has root, the game is over. You've got a lot more to worry about beyond having the loopback interface sniffed. As you add plugins to your SquirrelMail installation, you might want to configure some of them on your own account and then propagate those settings to all of your users.
Or you may simply want to change the default theme, etc. This is what you need to do to accomplish that. Log into your own account or a test account and get all your configuration set to what you'd like the defaults to be.
Open the preference file related to the account you used. It's in the data directory and looks something like username.
Find the relevant settings.
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