My exchange server is currently being used to route around 5000 spam emails every hour.
Does anyone know what I can do to close the relay port to stop this happening.
I have gone into IMS in Exchange admin and under routing checked the box host and clients that successfully authenticate. But this has had no effect
I have had to stop IMS service all together but this means no-one can send external emails.
Any advice
Does anyone know what I can do to close the relay port to stop this happening.
I have gone into IMS in Exchange admin and under routing checked the box host and clients that successfully authenticate. But this has had no effect
I have had to stop IMS service all together but this means no-one can send external emails.
Any advice