On January 22, 2010 at 17:12, Ken Hornstein wrote: > I'm not really here to debate you on this ... but the _point_ > is to prevent zombie PCs from doing final delivery to random sites > on the internet. It's a lot easier for the ISP to notice, "Hey, you > just tried to send 5000 emails in the space of 2 minutes", if their > mail servers are in the message path. And many ISPs are doing stuff > like POP-before-SMTP instead of authentication.
Ahh, I misunderstood things. You are refering to blocking customer systems from transmitting to any port 25 on the Internet. On my home network, I run a central sendmail server, and I have it configured to forward any messages to the ISP servers for any non-local messages. If they blocked port 25 to their mail servers, I would have a problem. I have no problems with ISPs block 25 for non-business users, but they should allow port 25 connections into their mail servers from all customer systems. Requiring customers to use the newer submission port assumes a specific home user model (but ISPs may not care about advanced home users). --ewh _______________________________________________ Nmh-workers mailing list Nmh-workers@nongnu.org http://lists.nongnu.org/mailman/listinfo/nmh-workers