We have a spambot infection on our network, and have been listed on the CBL. On other routers in the past I've simply put an outbound rule to only allow port 25 from the internal IP of the mailserver.
This does 2 things - imediately blocks the spam going out 'assuming the mailserver itself isn't infected' & the logs show what machine(s) is/are infected.
We have an SBS server running exchange which we use to send all our legitimate mail through.
I can't see on our Infinity Business Hub 3.0 where I can configure this.
The only thing I can find is 'Outbound Protocol Control'
Which only allows me to enable a protocol outbound network wide, which wont work for us as we can't block all SMTP traffic on the network.
Please point us in the right direction as we can't have our business emails blocked.
Many thanks in Advance
