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Thank you for posting your query, I will be glad to help you.
It seems like you're encountering an error code "C8.CB.DD.0B" after upgrading the firmware on your HP Color LaserJet MFP 3301sdw, which replaced the previous error code "C1.BF.FC.0B".
This new error code likely indicates an issue with the printer’s network connection, scanning process, or possibly the email settings after the firmware update. Below are some steps you can take to troubleshoot and hopefully resolve the issue:
1. Check Network Connectivity
The error code could be network-related, particularly if the printer is having trouble reaching the SMTP server when attempting to send the scan via email.
- Verify IP Configuration: Check the printer’s IP settings under the Network menu in the printer’s web interface. Ensure that the printer is connected to the correct network and has a valid IP address.
- Ping the SMTP Server: Ensure the printer can reach the SMTP server by pinging it from the printer’s web interface. If it can’t ping the server, there might be a network or firewall issue blocking the connection.
- Check for Network Isolation: If the printer is on a separate VLAN or network segment, ensure that it's not isolated from the necessary resources, such as the internet or your email server.
2. Verify SMTP Settings
Even though the configuration passed the initial test, there could be a deeper issue with the email settings.
- SMTP Authentication: Double-check the SMTP settings on the printer. Ensure that the authentication method, username, and password are correct, especially if you're using an encrypted connection (SSL/TLS).
- SMTP Port: Ensure that the correct SMTP port (usually 25, 587, or 465) is being used and that it matches the configuration of the mail server.
- Encryption Settings: Verify that the correct encryption method (SSL/TLS) is set in the printer’s scan-to-email settings, matching the requirements of your SMTP server.
I hope this helps.
Take care and have a good day.
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Rachel571
HP Support