Spam email from my own domain

Issue encountered

Users are receiving spam emails that seem to come from their own domain.

Cause

Some spam emails contain a fake 'SMTPSimple Mail Transport Protocol FROM' email address consisting of the same domain as the recipient. This may seem as if the email is coming from a local user.

Solutions

Follow these steps:

1. Enable Sender Policy Framework from within SpamRazer anti-spam filter, to block emails originating from spoofed addresses. For more information refer to SpamRazer.

2. Create an SPF record for your domain. For more information refer to http://go.gfi.com/?pageid=ME_CreateSPFRecord.

3. Ensure that SpamRazer is configured to run at a higher priority than the WhitelistA list of email addresses and domains from which emails are always received module. For more information refer to Sorting anti-spam filters by priority.