Hi,
You can try:
Solutions 1:
Mail Alerts Office365, error 027-504
You are able to scan to email using his Office 365 account. However, mail alerts are using that same account, and are not being sent, instead the error 027-504 is logged on the device.
In order to resolve this issue clear out the Administrator's email Address field and clear out the domain field as well.
You can clear the Administrator's email Address and domain in the following CWIS menu.
Administrator's email Address:
Properties > Description >Administrator's E-mail Address:
Domain:
Properties > Connectivity > Protocols > TCP/IP > Domain Name:
With both of these fields cleared Office365 should work properly.
Solutions 2:
027-504 Failed e-mail
1. Email would fail with fault code 027-504 invalid response from smtp server.
2. Invalid response been detected message.
Resolution
Subject line was being filtered by e-mail server.
2. Disable Smart eSolution on CWIS. Properties - General Setup - Smart eSolutions - Registration - Register with Xerox Communication Server - Server Communication - Enabled - unchecked.