Re: Email sender authentication

On 09/27/2017 01:22 PM, Nabeel Jafferali wrote:
> What I am not clear about is how email senders are 
> managed/authenticated? I believe that to Hylafax these faxes would all 
> be coming from the local Postfix user, so faxadduser is not necessary? 
> I assume then that Postfix would need to do the sender authentication? 
> Anyone have any examples on how to do this?

You can implement authentication in whatever way you see fit.  Yes, you 
won't need to worry about faxadduser as long as local system accounts 
are permitted access through the loopback interface (which is there by 
default).

One way to do the authentication is within the mail2fax script. Just 
have it check the sender's email address against your list somehow.  If 
it is valid then process it.  If it is not valid then discard.

Thanks,

Lee.