We are having an issue where the out of the box workflow notification is not sending the e-mails in BC. There is an error in the job queue - A call to MailKit.Net.Smtp.SmtpClient.Send failed with this message: No recipients have been specified.
We can send a test e-mail successfully from the SMTP Mail Setup - to people within the domain and to people outside the domain. It is only in the job queue that it is failing - and it fails for both people in the domain and people out of the domain.
We believe this is an SMTP issues instead of BC, but there doesn't seem to be much info out there on this specific error message. G Suite is being used for SMTP.
Anyone have this issue before and know what SMTP settings need changed to fix it?
The users do all have e-mail addresses in the Approval User Setup page.