I have a problem with the exchange server which shows the following behavior:
- It does not send emails from outlook/mobile apps/OWA.
- It sends mails coming from applications or from powershell both inbound/outbound. No restrictions on from/to addresses etc.
- No trace of emails on delivery reports. It looks like they don't even exist.
- This has started to happen after installing August's windows updates (uninstalling them did not help)
- There is no change to receive/send connectors.
Any tips?