[AusNOG] Fw: important

[Noel Butler]

On 01/10/2015 13:43, Chad Kelly wrote:

> You can set IronPort to just drop anything with a .zip extension,
> which solves these issues as the appliance will drop the emails before
> they even reach the server.
> Ironport can also do inbound filtering as well as outbound.
> Given what you guys want to use the system for it may well be worth
> the investment in buying your own appliances.
> Regards Chad.

most admins of ISP's around the globe avoid appliances like that, they 
have poor history, a google search I'm sure will show you examples if 
you look for ironport problems/disasters/nightmares and so on, anti-spam 
software like spamassassin (which is exactly what is under the hood of a 
certain well known appliance or two) is freeand has very little resource 
effect on mail servers, the real hog is anti-virus, and if you choose 
your scanners right, you wont notice too much there either, and the 
benefit is you get to manage rules for your own network. If you dont 
process much mail, perhaps YMMV and you dont see the scale of 
nightmares.