MF733CDW Cannot Scan to Email with SMTP Auth - Error 806

[sh_tech]

We just installed a new Color imageClass MF733CDW and configured it to scan to email, using the following settings: 

SMTP Server: smtp.office365.com

Use SMTP Auth, username: authenticatedaccount@ourdomain.com with known good password

Checked TLS

Set Networking Port to 587

When trying to scan to email, the printer spits out a piece of paper that says "Error".  The TX logs through the Remote UI says Error #806, which supposedly means the recipient email address isn't valid.  But we know it is.

We also have an open SMTP relay.  When I use those settings over port 25 with no authentication, the scan goes through just fine.

Can anyone think of anything else for us to look at?  We've been an HP shop until now, so I might be missing a setting in this Canon UI somewhere?  Or ... I dunno.  I'm just stumped.

[shadowsports]

Your settings appear to be correct for outbound SMTP on O365.

I have seen issues where the password (characters may not be supported or allowed).  If you are using any special characters other than alpha-numeric with one or more CAPS, try simplfying the password and retest.  Believe the printer has to be restarted after a setting is changed and saved.

[sh_tech]

Thanks for your reply.  Our password is alphanumeric only with a capital letter and 1 number at the end.  We restart the printer after every single change.  Still no joy.

[Patrice]

Hi sh_tech.

Please scan and attach a document to an email using the Canon IJ Scan Utility program on the computer. Please send the email to the address that you are experiencing the issue with. Do you receive any errors?

If there are no errors when sending the document this way, please call us at 1-800-OK-CANON (652-2666), Monday - Friday 10:00 a.m. to 6:30 p.m. ET (excluding holidays).

[sh_tech]

I will try that, but we have the printer installed on a print server and don't use the Canon utility program on our workstations... does that make a difference to your resolution?

[Patrice]

Hi sh_tech.

I apologize. I missed where you said that you were able to scan using port 25. Please try using a Gmail or Yahoo account and verify if you run into the same error.

If you need immediate assistance, please contact us at 1-800-OK-CANON (652-2666), Monday - Friday 10:00 a.m. to 6:30 p.m. ET (excluding holidays).

[fortescomputers]

Having a similar problem after changing GMail password. It now includes a & but the former one had ( and ) so if you have a list of what is acceptable, please share.

btw my error is 801 but I can't see anywhere in the UI where you enter SMTP settings like SSL/TLS or ports.

Thanks for sharing.

Matthew

[herbys · Accepted solution]

The UI to set the port numbers is separate: 

https://oip.manual.canon/USRMA-1354-zz-SS-enUS/contents/SS249_security_233changingportnumbers.html#0...

Yes, it's really poor design, don't know who came up with that. 

[KurtAp2245]

Thanks a million to herbys.

I am finally successfully scanning to email from My Canon 445DW ( mf440 series ) using Office 365 0365.

I am using a standard SMTP with these settings in the canon.

smtp.office365.com

with username and password

 painfully changed port to port 587  

The UI to set the port numbers is separate: 

https://oip.manual.canon/USRMA-1354-zz-SS-enUS/contents/SS249_security_233changingportnumbers.html#0...

Yes, it's really poor design, don't know who came up with that. 

yes, I'm using TLS, but not STARTTLS as that isn't an option.

Method #1 here.

https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/how-to-set-up-a-multifunction-dev...

If Canon hadn't hidden the port change, it would have saved me a lot of grief.

[Nik2018]

I bought Canon MF733 in 2018

The first year everything working great

.. " Scan to Email " ... very easy to set up just use printer display to add as many Email you want

and printer will do the job for you

When you want to scan to Email just pick any or many Email of your choices

My kids , my spouse can scan to Email when I travel oversea ... very easy

... BUT after software update in 2020 .... EVERYTHING GOES BAD ... VERY BAD ...!!!

Now the same Canon printer since 2018 cannot ... " Scan to Email " ... anymore  ----  WHY ...??

What kind of software update made machine get worst ....??

I try to erase every software update and installed again from original CD with no success

I have NO SCAN TO EMAIL for more than 2 years now

So, I bought HP Inkjet Printer All in One HP at 4 times cheaper than this Canon MF733C at Amazon

This HP 7155 is a low cost inkjet WiFi  printer Fax & Scanner and WORKING GREAT

-----  Now I can SCAN TO EMAIL again -----

Set up is very easy .... Just like the first time I have Canon MF733C by put in Email Address as much as you want , the different is HP 7155 must send 1 Email at a time , Canon can send more than 1 Email .... BUT it is not working

Search YouTube .... some are good ...

https://youtu.be/bLygv3E0ODY .... go to Remote UI

https://youtu.be/O7bpPG2fC0w

... Try it