You configure Personal Email Detection rule and would like to update alias table with possible nicknames.
16.1
25.1
Alias mapping table can be found in PersonalEmailDictionary_en.properties file under C:\Program Files\Symantec\DataLossPrevention\EnforceServer\VERSION\Protect\config\emailaliasdictionary folder. You can add additional nicknames to existing entries or define new ones in a new line.
You should only use PersonalEmailDictionary_en.properties. Additional alias table configuration files, e.g. like PersonalEmailDictionary_de.properties will be not loaded.