So what is the status of emails after the specified date ? Is it failed ? if yes, if you open the failed emails, you can see the reason of email failure.
Maybe I am missing something here and you can point me in the right direction.
Under Technical -> Discuss / Messages I can see the messages sent, but under Technical -> Email / Emails the last message was on 30 August.
Are the two menu selections mutually exclusive with the latter only showing incoming and failed messages? It does not seem so.