I am using UTM 9.708-6 with Exchange Server 2019. Everything was running fine, until 2 days ago. I made a change into the Exchange receive connector Relay configuration. Due to an additional server, I had to extend this value. Before it was 10.0.0.1…

Hello, I have just re-commissioned a development Exchange 2010 SP3 server ready for upgrading and after checking the system, I have found that any incoming external emails are getting rejected by the UTM (9.4) with an address unknown error: from=…