Outgoing mail server blocked on Apple Mail

[Adrian000]

My outgoing email is continuously offline. (SMTP server) 

I have narrowed this down to kaspersky's IDS content filter under network settings. 

I turn off the network attack blocker and the IDS content filter remains disabled.

And apple mail outgoing then works fine.

Is there anyway I can enable the network attack blocker and keep my smtp server connection online? 

Any help would be appreciated. Cheers Adrian