[kwlug-disc] Mail filtering/smarthost services

[Stuart Seeley]

Hi Paul,

I used to use one of these...

Ceryx.com .... 

The product specifically was ‘email firewall’
Essentially it’s spam filtering on incoming, and a smart host for outgoing.

For incoming, you poke holes in your firewall to allow their 4 servers access, and then your SMTP port is effectively blocked to everyone but them.

For outgoing, your mail server is setup to relay through them... 

I’m sure there are lots of them out there... I think we paid $3/user or something while it was in place. (We’re just using what’s built into Office365 hosted exchange now, which I must say is no where near as good for blocking malware/spam/419/etc.)

Stuart


Sent from my iPad

> On Nov 5, 2018, at 1:49 PM, Paul Nijjar via kwlug-disc <kwlug-disc at kwlug.org> wrote:
> 
> 
> I am doing some research on behalf of an organization with 100-200
> mailboxes. I do not know how much mail they send to the outside, but
> it is probably not more than a few thousand a day. They have an
> internal mail server that communicates with an outside server to send
> and receive mail from the broader internet.  They don't want to expose
> their internal server to the internet any more than necessary. 
> 
> There are some services that offer to send and receive mail on your
> behalf. They will filter incoming mail for spam and
> viruses/ransomware. Then you can use them as a smarthost for outgoing
> mail, and they will deal with the hassle of making sure their
> reputation is good on the dozens of blacklists out there. 
> 
> Does anybody use a service like this? Has anybody investigated these
> services? Who is trustworthy and reliable? What is a reasonable price
> per month to pay?  Filtering malware out of incoming messages is super
> important. I think Canadian providers would be preferred but this may
> not be a hard constraint.
> 
> - Paul
> -- 
> http://pnijjar.freeshell.org
> 
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