Valid words used in non-English languages with less than 3 characters are not accepted by the GFI MailEssentials Configuration. When trying to enter a word or phrase with less than 3 characters, the following message is displayed:
Please type in a value that is at least 3 characters long.
Build number: 20110812
Upgrade to the latest build of GFI MailEssentials 2015 or later.