At 2:57 AM -0500 2003/10/02, Bill Weinman wrote:
If you don't control the other machine, how are you going to control what they use for MPC? If you don't control the anti-spam settings for the other machine, how are you going to control what spam gets into your system?Why would backup servers have different MPC than the servers they back up?Because they aren't always provided by the same company.That doesn't mean they must have different preemptive MPC values. There are a number of ways to deal with this: use a least-restrictive common setting for the EHLO reply MPC value; bind to a particular IP addresses for your back up server. That's off the top of my head.
Homogenous network environments where the same policy is applied to everyone is not going to be a particularly large subset of users.The EHLO reply preemptive MPC feature is not for everyone. I'm assuming most large ISPs will not use it. But it's an excellent solution for corporate mail servers where the corporation wants to control costs and set company-wide policies.
Which implies that we need some sort of mechanism to be able to communicate this information later in the SMTP dialog.But I expect many ISPs to have various settings available for their users to set on a recipient-specific basis. Like they do now with spam filters.