The Country Blocking filter identifies all email sent from mail servers that are in the IP address space assigned to a specific country. It doesn't matter whether the message is spam or not. If you only have contacts in the United States, it's possible that these messages are unwanted, but the email did not trigger any of our spam filters.
The default setting is to modify the email’s Subject: line by adding "[Foreign Sender]". This tag is informational only - it may help you to determine whether to look at the message.
The countries include:
| Country |
Tagging |
| Argentina |
- Recommended unless you have clients there |
| Brazil |
- Recommended unless you have clients there |
| China |
- Highly recommended |
| Hong Kong |
- Recommended |
| Japan |
- Optional (Due to many open relays in Japan) |
| Korea |
- Highly recommended |
| Malaysia |
- Recommended |
| Nigeria |
- Recommended |
| Russia |
- Recommended unless you have clients there |
| Singapore |
- Recommended |
| Taiwan |
- Highly recommended |
| Thailand |
- Recommended |
To change the country blocking:
- Click on "Edit" next to "Country Blocking".
- Check the boxes next to the countries you would like to block, or uncheck to stop blocking.
- Select one of the four radio button options next to the action you would like to take on email caught with this filter (MODIFY SUBJECT Recommended).
- Click on "Set" to save the changes.
