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: smtp.gmail.com
  • E-mail address: (my username)@gmail.com
  • Password: (my gmail password)
  • Use SMTP authentication (SMTP Auth): checked yes
    • Username: (my username)@gmail.com
  • 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...