Adding blocking reason to headers

GFI MailEssentials allows administrator to append the reason for blocking an email to its headers. The header of a blocked email will contain email blocked by one of the GFI MailEssentials spam filters.

For example:

X-GFIME-BLOCK-REASON: Found word(s) spammer in the subject

In the above example, the entry added to the email header indicates that the email was blocked by the Spam Keyword Checking filter because the subject contained the word spammer.

This option can be useful to troubleshoot false positives, whereby legitimate emails have been incorrectly classified as spam.

To add blocking reason to headers:

  1. Go to Anti-Spam > Anti-Spam Settings.
  2. From the General tab, check the option Append an XHeader to the headers with the blocked reason.
  3. Click Apply.