03-18-2015 09:38 PM
Welcome to the Canon Forums and thanks for your post!
To have a better understanding of your issue, please let everyone know what unit you have (e.g., L190, imageCLASS D530, etc.). That way, the community will be able to assist you with suggestions appropriate for your product.
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03-19-2015 10:30 PM
Terribly sorry, I forgot to give the info on my printer. I have the Pixma MX 340. It isn't new, and I fax from it quite frequently. It is running on WiFi, which has never been a problem before, and shouldn't be with the fax line. I am just lost on this one. Haven't figured it out yet.
03-23-2015 01:40 AM - edited 03-23-2015 01:52 AM
The error is most likely being received because the fax machine is checking to ensure that the number that you are faxing to matches the number of the recipient's fax machine. If the recipient has a number of fax machines that can receive faxes with different numbers assigned to them, your fax will return the error if the two numbers do not match.
Disabling the Check RX Fax Info setting on the printer should prevent the error from appearing. To do this, please follow the steps located here. Should you continue to receive the error, please call or email us using one of the methods on the Contact Us page for further assistance.