Known Email Address

This page allows you to specify addresses you wish to recognise. You can then decide whether you wish to Reject email from the address, Accept it, or tag it with a spam header.

Possible uses of this might be

  • Reject
  • Accept
  • Warn

Technical detail

This page allows you perform matching against the email address portion of the MAIL FROM parameter of the SMTP conversation (the envelope from). Because the envelope is passed early in the SMTP conversation, before the headers and body, it is cheaper for us to reject based on evelope information.

Recieved mail has a header, Return-Path:, added with this address. You may need to enable a “show all headers” or “view message source” feature in your mail client to see this.

NOTE this is not the same as the From: header, which is the one which a mail client usually displays.