topic Re: imageCLASS MF656Cdw Scan/fax set up, SMTP connection issue in Printer Software & Networking

imageCLASS MF656Cdw Scan/fax set up, SMTP connection issue

labi — Thu, 28 Aug 2025 03:15:19 GMT

Hi,

I am a new customer of Cannon. I bought a new Imageclass656c, and I have not been able to scan my document. The system could not check my SMTP connection to the SMTP server. I have checked my internet, it is working. I will appreciate any help. Thanks!

Re: Scan/fax set up

Tiffany — Wed, 27 Aug 2025 23:33:12 GMT

Welcome to the forum!

So that the Community can help you better, let us know the exact error message. How are you connecting? Which version of Windows or macOS you are using? Any other details you'd like to give will only help the Community better understand your issue. The forum is not intended for immediate support. If this is a time-sensitive matter, click HERE search our knowledge base or find additional support options HERE

Re: imageCLASS MF656Cdw Scan/fax set up, SMTP connection issue

shadowsports — Thu, 28 Aug 2025 12:55:00 GMT

Greetings ,

In order for your printer to scan to email or use iFax, you need to enter SMTP settings for your mail host into its remote UI. What mail host do you intend to use?

Re: imageCLASS MF656Cdw Scan/fax set up, SMTP connection issue

miller43334 — Tue, 02 Sep 2025 21:29:38 GMT

I'm having the exact same issue!

Windows 11

#806 Error when trying to scan to email

I've read several posts, and forum responses, still with no luck.

Canon ImageClass MF656 Cdw

I've setup the Remote UI.

SMTP: smtp.gmail.com

Email Address: miller43334@gmail.com

Check SMTP Connection = Success.

I've tried using the SMTP Authentication. And I've tried using the TLS for SMTP TX. Neither have been successful. I'm obviously missing something, but I can't figure it out. Please advise.

Re: imageCLASS MF656Cdw Scan/fax set up, SMTP connection issue

shadowsports — Tue, 02 Sep 2025 22:02:15 GMT

Greetings,

You need to use an app password. For Gmail, enter the 16 digits without dashes. Be sure to use port 587.

See my post here for port and Gmail config examples:

https://community.usa.canon.com/t5/Office-Printers/Cannon-MF650c-Series-Instructions-needed-to-set-up-scan-to-email/td-p/550642#M29673

Re: imageCLASS MF656Cdw Scan/fax set up, SMTP connection issue

miller43334 — Tue, 02 Sep 2025 22:06:03 GMT

That did the trick!!! THANKS!

Re: imageCLASS MF656Cdw Scan/fax set up, SMTP connection issue

shadowsports — Wed, 03 Sep 2025 00:18:09 GMT

Glad it worked. 🙂

Re: imageCLASS MF656Cdw Scan/fax set up, SMTP connection issue

rockntrumpet — Thu, 07 May 2026 00:43:51 GMT

I'm still having issues after doing everything listed...any other suggestions?

Re: imageCLASS MF656Cdw Scan/fax set up, SMTP connection issue

shadowsports — Thu, 07 May 2026 14:04:43 GMT

Greetings,

There is not an alternate configuration. Respectfully, if you did everything listed, it will work. Somewhere you've missed a setting or have not entered something correctly. What error message are you receiving?

Please provide your configuration. I'll do my best to help you identify what is incorrect. Please use the link above to my other post there are images with the correct settings for Gmail.