>We're not using SMTP Auth because users come from multiple different ISPs.

non sequitor, but it's Monday, so you're forgiven.   :))

>What about ESMTP?  If we aren't using SMTP Auth, will Imail work OK without
>ESMTP commands?

probably.

>  > If you want serious, rather than "marketing buzzword", SMTP defense, use
>an
> > SMTP proxy like IMGate.
>
>We looked at IMGate but lacking the time to learn how to install we've
>installed Declude HiJack until the time and traffic warrant IMGate. (Which
>we plan to put in the DMZ and only allow SMTP from these machines)

there ya go.  SMTP and DNS "forwarding architecture".

>So...will Imail work OK without the ESMTP commands?

I'd have to go look up the ESMTP RFC, but the only thing that might be at 
risk is the SIZE feature.   you look it up.  :))

Len


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