The server authentication policies allows you to restrict login attempts to any mail service to specific countries. The connecting IP address is checked against a country database and will either be blocked or allowed to perform a login attempt. This option can increase security by restricting all login attempts to within your own country.
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Setting |
Explanation |
| Enable location services for filtering and authentication | Enable this so that emails will be marked with location for filtering and authentication. |
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Enable country authentication restrictions |
Country login restrictions are able to be set on a global, postoffice or mailbox level. You are able to set this to be global for all logins, or allow postoffices to configure their own country settings. |
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Stop connections from the countries below authenticating. All other countries can authenticate. |
There are two modes available for determining whether a person in a country can authenticate. You can either block specific countries or allow specific countries. Selecting this option allows you to block individual countries. |
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Only connections from the countries selected below can authenticate. |
Select this option when you just want to select the countries that are able to log in. |
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Countries |
This is the country list where you can select which countries apply to the above settings. |
| Allow valid postoffice domain aliases in usernames | By default users have to authenticate using mailbox@postoffice. This option allows users to use any of the domains mapped to their mailbox as well as postoffice name. So if a mailbox called 'john' is under a postoffice that has two domains example1.com and example2.com then they can use either john@example1.com or john@example2.com as their username. |