I'm having trouble getting the Ricoh IM C4500 to scan to email. After the installation, every attempt results in a "failed to connect SMTP server" error along with a 554 (702) rejection. We managed to authenticate via OAuth, but it seems there's a problem with the SMTP connection.
From what I've seen on the printer side, there's a warning that SSL communication is unavailable, and system logs indicate repeated failed connection attempts to the SMTP server. Meanwhile, on the Microsoft side, the app registration looks good, and the device connects without issues.
I'm wondering if this is a firmware issue, a hardware problem, or if I might be overlooking something in the settings. Has anyone experienced similar issues with this model or the IM C series?
1 Answer
The 554 error usually indicates a rejection, which might mean your IP's blacklisted. You can check that with MXToolbox, and ensure your SPF/DKIM/DMARC settings are correct. Instead of using smtp.office365.com, I'd suggest using your MX record and switching to port 25 without authentication. Also, setting up a 365 connector in the exchange portal might help with incoming emails.
Thanks for the advice! I currently have three DNS servers set up, but I'll try making the last one the primary and see if it changes anything.