SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATAIssue You will identify this issue if an expected email did not arrive in the instance and the following is reported on the sending mail server "SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA" CauseThe Microsoft Document describes this error This issue occurs if the source message transfer agent (MTA) didn't append the expected CR-LF combination to the end of the message as documented in Request For Comments (RFC) 2822. ServiceNow email servers follow RFC 2822ResolutionFollow the steps in the above Microsoft document to have the email sent following RFC 2822 standards