If you find your queues are getting full of NDRs from the postmaster to spammers you can turn off allow non-delivery reports in EMC:
- Organization Configuration
- Hub transport
- Remote domains
Enable only ‘Allow delivery reports’ and ‘Display sender’s name on messages’.
If running a single exchange server with hub transport on it you can enable spam filtering.
Expedited manual expressdelisting is available as an option, in case you do not want to wait for the automatic and free expiration.
You will be charged 86 EUR using one of the following payment services.
86 EUR? Not shy guys … 😦