We have an Exchange 2013 install running on a VM. It has been running successfully for 5 months. Today users quit receiving emails, however sent emails we're going through. A quick check revealed that the VM's hard drive was low on space so presumably Exchange suspended some operations.
I shut down the VM, increased the HD drive, and restarted. Now, emails can be received from the internet, but emails sent with Outlook, either to other local users or the internet, are never received. However, if I send an email from an application which utilizes an Anonymous SMTP connector, those emails are received both locally and if I send to an internet email address.
When I send by Outlook, the message does not sit in the Outbox.
I will add that in the process of increasing the HD size, I also installed some Windows updates that were pending (bad idea maybe). I have restarted the server several times since then.
The most frustrating thing is I cannot determine which logs to look at to help track down this failure. I have viewed logs showing incomming emails but not outgoing.
Any suggestions on how to troubleshoot this issue would be greatly appreciated!