Harry Duncan wrote:
> On Tue, Mar 18, 2008 at 3:18 PM, Gordon Messmer <[EMAIL PROTECTED]> wrote:
>   
> Are you saying that you could not modify mails with filters if the
> mail is sent using SMTP AUTH?
>   

You can modify mail regardless of whether or not AUTH is used.

>> However, even with all of that done, there's little or nothing stopping
>> your users from sending email from somewhere else.  You probably have
>> too much senior management... they seem to be getting bored and worrying
>> about non-existent threats.
>>     
>
> Actually there is strict european legislation being enacted across the
> EU which is mandating that emails be boilerplated with full company
> legal name, legal structure and list of company principals, and
> failure to comply can mean 250K in fines and imprisionment. I'd say
> thats a very existent threat for any management to worry about.
>   

That's not what was asked.

>>> Failing that would it be possible
>>>      to examine outgoing e-mail and drop messages that didn't include the
>>>      senders "approved" signature.
>>>       
>> Sure.  Slightly easier, but no less easily circumvented.
>>     
>
> I would have thought this was harder given that it is next to
> impossible to pre-determine what constitutes a signature unless users
> follow the double dash and three line rules, which most don't..
>   

It would be difficult for a machine to determine whether or not a 
message had "a signature. It is trivial for a machine to determine 
whether or not a message has a specific signature.

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