I forwarded the message above from DazzaM to our IT support and they went from there and were able to create a workaround, as mentioned in their email. I hope you can get the situation sorted sooner rather than later.
Thanks for that, my issue was fixed by unticking send via accountright.
Just be careful if you have access to multiple email addresses as MYOB will not always send from the default account and we've had trouble with it sending invoices from email accounts of unrelated entities as it doesn't talk to Outlook like it used to.
