This guide covers address spoofing and spam appearing to come from your own email address.

Has my account sent spam?

Receiving spam that appears to be from you does not mean your account has been compromised. These messages are only sent to you and not to your contacts. Action: Check that your address is not on the whitelist of your antispam filter and remove it if necessary.

Mass sending errors (Bounces)

If you receive delivery failure notifications for messages you did not send, it means that spammers are using your address as the sender to bypass filters. These mass mailings usually come from poorly secured third-party servers or networks of infected computers (botnets).

Have I been hacked?

No. This is "mail forging" (email falsification). It is a technical limitation of the global mail protocol. Although Infomaniak servers require strict authentication, it is impossible to prevent an unsecured third-party server from spoofing your sender's visual identity.

Additional precautions

• Check that no catch-all type address is redirecting unwanted streams to your main inbox.
• Implement a DMARC protocol to analyze and limit the fraudulent use of your domain.