I had workflows configured to send mails out using the mail tool in the version prior to 2018.3. This had the Autodetect SMTP. I was able to send emails out via the Workflow. After upgrading to 2018.3, I see the mail now requires you to specify the SMTP. I checked with my IT, and he gave me SMTP Server:
smtp.office365.com. Port 587.
I put these in these field, but now my flow runs into errors:
Email (88) Record#1: Unable to send email: "Error with FROM: 530 5.7.57 SMTP; Client was not authenticated to send anonymous mail during MAIL FROM [BYAPR02CA0016.namprd02.prod.outlook.com] ¶"
Can you please advise what to do here? My previous workflows worked with no issues (version prior to 2018.3) where I didn't have to specify the SMTP field.