Re: iesg comment re message submission in draft-ietf-grip-isp-expectations-03.txt

[Patrik Fältström <paf@swip.net>]

At 09.45 -0700 00-05-30, Randall Gellens wrote:
>In addition, to facilitate the enforcement of security policy, it is 
>strongly recommended that messages be submitted using the MAIL 
>SUBMIT port (587) as discussed in "Message Submission" [RFC2476], 
>rather than through the SMTP port (25).   In this way the SMTP port 
>(25) can be restricted to local delivery only.
>
>The reason for this is to be able to differentiate between inbound 
>local delivery and relay (i.e., allow customers to send email via 
>the ISP's SMTP service to arbitrary receivers on the Internet). 
>Non-authenticated SMTP should only be allowed for local delivery.

What I don't understand is what you win by separating this on two 
different port numbers.

Can you explain?

Part from this, the suggested text is ok.

   paf