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[MF644CDW] Setting up "Scan to Email" using Gmail SMTP / help?


For the past several months, I have tried setting up my MF644CDW to scan to email. I've followed the instructions to the best of my ability, and read a number of posts on here... and yet, I'm still stuck. Turning to this forum in the hopes someone has cracked the code.


Here's what I've done so far:


  • Using RemoteUI, gone to Settings & Registration > Network Settings > Port Number Settings
    • I set the SMTP port to 587
  • Using RemoteUI, gone to Settings & Registration > TX Settings > E-Mail/I-Fax Settings
    • SMTP server:
    • E-mail address: (my username)
    • Password: (my gmail password)
    • Use SMTP authentication (SMTP Auth): checked yes
      • Username: (my username)
    • Use TLS for SMTP: checked yes
  • On Gmail itself (a free personal account, if it matters...) I enabled "less secure apps"


Here's what happens when I try to Scan to E-mail:


  • Very quickly, after scanning a document, the printer warms up and prints out a status report. There are not many details: only the number of pages, the destination email, and the word "ERROR"

Did I miss something here? Is there a way to get more information from the printer about what the error actually is - is it an authentication error, something else?


Appreciate any pointers you guys have. Going crazy here...

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