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Resolve an error "550 5.7.1 relaying denied"
This guide helps resolve an email sending error of type "the recipient has been rejected by the server" / "recipient rejected" (code: 550 5.7.1 relaying denied) or "authentication required" / "proper authentication required".
Resolve a Relaying denied error
Check that the parameter "My server requires authentication" / "My outgoing server (SMTP) requires authentication" has been activated in the settings of your outgoing server (SMTP) on the email software used.
You will generally find this setting under one of the following sections:
- "More Settings"
- "Advanced Settings"
- "Outgoing Server (SMTP)"
After correcting this parameter, it is important to delete or move pending messages in your outbox, then try sending a new message.
Use config.infomaniak.com
You can use the Infomaniak configuration tool to help you (log in to your Infomaniak account if necessary).
Also refer to this other guide for resolving errors.
If the error message specifically mentions IP name possibly forged, you will need to contact the person in charge of your internet connection (your internet service provider) to verify the situation with them (or change your IP address by testing from another device/network, etc.).
Link naar deze veelgestelde vragen: https://faq.infomaniak.com/337
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