Does anyone have the definitive settings for incoming and outgoing mail accounts for the Web Help Desk email to be able to use Office 365. I've tried lots of settings but can't get past this error:
550 5.7.60 SMTP; Client does not have permissions to send as this sender
Can anyone help?
That's not an issue with the config, it's that the user account does not have send as permissions for the email address you are sending out as.