First of all I'm aware that I should use some anti-virus mechanism to prevent as much as possible any ransomware being delivered through my mail server - and yes I'm already using that kind of protection.
What is the best practice for a sys admin to fight against ransomwares? I had in my mind couple of things, like; blocking mostly used (by them) file types, implementing SPF, DKIM and DMRAC, anti-spam mechanism... So any ideas guys?
This can be useful to know because I belive that ransomwares are most of the time delivered through emails. EDIT: my belive was right, here is an example of 2016 stats - Email is the #1 delivery vehicle for ransomware -