A new article from Hacker News suggests that when a fax is sent to a fax header line, it may be intercepted and redirected to a server which then forwards the fax to a destination address.
This happens when the sender and the recipient are using a different fax client.
The article suggests that the email address for the destination fax client may be different from the email for the sender, but there is no reason to assume this is the case.
It is just a speculation, and it would be nice to have a more thorough analysis of this.
It may be possible that the source fax client is sending the fax directly to the server, which will redirect the fax from its destination to the sender’s server.
It might also be possible for the server to send the fax using a separate fax client, and then redirect the email from that fax client to the destination.
The data sent by the server might also contain additional information that might be helpful in tracing the source.
However, there is an even more significant risk here.
If the source of the fax is using a proxy server, the data sent to the target server may contain the fingerprint of the proxy server.
The fingerprint is unique to the source server and will only be present if the source is connected to the internet.
If the destination server uses a different server for sending faxes, then the fingerprint may be present in the data the server sends to the recipient, as well as in the headers of the email sent to that destination server.
This fingerprint can be used to identify the source, and the destination could be tracked.
It is important to remember that this is just speculation, so it is not impossible that the data could be sent to an outside source, as in some cases, it would have been possible for a malicious fax to be sent.
It would still be a great way to be detected if someone tried to send a malicious email, and you would know.
Source: Hacker News