On Mon, 13 Feb 2017 22:18:49 +0100 peter h <peter@hk.ipsec.se> wrote:
There is not any req that all customers always should be forced to use ISP relays, the default behaviour might be to use ISP relays, and to have DHCP given address. But for an extra service one could obtain a fixed address, and as extra service, use port 25. The main point is to have those "unaware" users, whos computers might be stolen, prevented. They won't notice, and they don't get harmed.
there used to be free (and reasonably well maintained) open lists of dynamic IPv4 ranges. Since everyone started selling (or renting) data, getting a free (and maintained) list of dynamic ranges, is difficult, if not impossible - anyone know of any such free list?
Spam from a fixed ip or range is much easier to detact and correct then spam from any box that happens to get an DHCP lease. Flexibility and service is the keyword here.
in a perfect world only email servers would be sending email. In our world someone's Android phone could also be an email server & client and some "ISP" loves using dynamic ranges as excuse for poorly maintained or non responsive abuse systems (or policy enforcement)
Also, to have a AUP that gives the ISP right to disconnect or block offenders is importent, and also that the customer has right to service. Any aggreement is twofold, both rights and obligations, like in society in general.
I'm glad that spam is recignised as the problem it is and hope a renewed activity to claim back the bandwitdh and storage space the spammer has taken from us.
Yours