Hello MS team,
I have a client who is running into some email issues:
Company developed an application server that basically uses a CRM tool and send bulk emails using a shared mailbox that is hosted on a Exchange 2013 server.
This application has been working well for a while, but suddenly they are receiving complains that all emails sent from that application do not contains attachments, somehow all attachments are being deleted.
I did a message tracking, and was able to see attached screenshots
What could be happened that emails flow OK, but attachments are being removed?
Exchange 2013 SP1, multiple CAS behind a F5, multiple MBX servers in a DAG, multiple DC, GCs, WIndows 2008 R2 forest and domain level, The OS in Windows 2012 R2 standard edition on all exchange VMs, Outlook version is 2013
According to application team, no changes made to application servers.
by the way, because the application uses a shared mailbox, the AD account for this mailbox is disabled in AD, I guess this is expected because is a shared mailbox? is that assumption correct?