SBS 2011 Standard (Exchange 2010).
About once every 2 weeks there is a problem where all the email for our domain is blocked. On Exchange, Server Config, Transport Hub, Antispan, I see that the server gateway is on the blocked ip list – I just remove it and it will work
again, until next time.
On the same server we have the Trend Micro Worry Free Business controlling our span - it is set to the maximum level before false positives, there are a few span passing thru but it's OK.If I try to add the gateway ip on the White List it will ignore our antispan solution, and the amount of trash is unbearable.
How can I configure the exchange so it never tries to “help me” and block this “span source” automatically?