How to Test Your SPAM Filter

Does my Email Filtering Solution Work?

Sometimes as email administrators we need to test if the SPAM filter works and is filtering messages. In order to do this we need to send a test message with content that we are sure is rated as SPAM.

GTUBE – Generic Test for Unsolicited Bulk Email

The GTUBE the “Generic Test for Unsolicited Bulk Email” is a test that can verify if your antispam filter is installed correctly and is detecting incoming spam.
GTUBE works in a similar fashion to the EICAR anti-virus test file.
Insert the following string in any email message and your antispam filter should detect it and filter it accordingly.
XJS*C4JDBQADN1.NSBN3*2IDNEN*GTUBE-STANDARD-ANTI-UBE-TEST-EMAIL*C.34X
Note that this string should be written in one line, without whitespace or line breaks.
Note that this string and can be reproduced freely, without attribution; they are hereby placed in the public domain.