Invalid Mailprotector Sender/Recipient

 

Is the Sender/Recipient listed on the domain, under /Users?

Mailprotector will verify both the sending and receiving addresses for any mail sent through it's systems to/from Mailprotector listed domains:

• If mail is being sent from a Mailprotector listed domain to a non-listed domain, Mailprotector will verify the sending address.
• if mail is being sent from a non-listed domain to a Mailprotector listed domain, Mailprotector will verify the receiving address.
• If mail is being sent from a Mailprotector listed domain to another Mailprotector listed domain, Mailprotector will verify both the sending and receivingaddresses.

 

I am receiving an Invalid Mailprotector Recipient bounce.

The domain MX records resolve to Mailprotector but the recipient is not known. This error indicates that the address you are attempting to send to is not recognized as a valid user by Mailprotector. In order to receive mail at a Mailprotector listed domain, the user(s) must be listed in the Mailprotector Console.

 

I am receiving an Invalid Mailprotector Sender bounce.

This error indicates that the address you are attempting to send from is not recognized as a valid user by Mailprotector Outbound SMTP servers. In order to send mail via Mailprotector’s Outbound Relay, the user(s) must be listed in the Mailprotector Console.

As well, Mailprotector checks the sending address on all messages sent from a Mailprotector domain to another Mailprotector domain, even if SafeSend / Outbound Relay is not in use.