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SSL/TSL security [message #771] Thu, 08 July 2004 17:06
InforMed Direct
Messages: 59
Registered: May 2004
Member
We use No Spam Today! with Exchange 5.5 - works a treat. However, one of our key customers requires us to start encrypting emails exchanged between the us.

As incoming SMTP connections are actually made to the No Spam Today! proxy, I'm interested as to what will happen if they try to start sending us encrypted emails...

Thanks, Rob.

Re: SSL/TSL security [message #772 is a reply to message #771] Mon, 12 July 2004 18:02 Go to previous message
support
Messages: 919
Registered: April 2004
Senior Member
InforMed Direct wrote:

> We use No Spam Today! with Exchange 5.5 - works a treat.
> However, one of our key customers requires us to start
> encrypting emails exchanged between the us.
>
> As incoming SMTP connections are actually made to the No Spam
> Today! proxy, I'm interested as to what will happen if they try
> to start sending us encrypted emails...

They won't be able to negotiate TLS connections, unless you add this line to your nospamtoday.cf file:

TLS=1

Spamchecking will be disabled for TLS connections.

If I remember correctly the SSL/TLS key length is only 128bit, which is not much nowadays. Maybe other encryption methods are preferable.



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