Quoting Meng Weng Wong (mengwong(_at_)dumbo(_dot_)pobox(_dot_)com):
On Wed, Jan 21, 2004 at 01:04:31PM -0500, Meng Weng Wong wrote:
| Could ISPs please weigh in on whether your email/spam bandwidth cost is
| signicant or not, thanks.
The decision at hand is:
How important is it to reject forgeries before DATA vs after DATA at "." time.
Its quite easy to add the hooks needed to reject before DATA to a
lot of MTAs, especially Postfix. Rejecting after DATA is much more
complicated. In my case a system redesign.
If I accepted all of the junk that I reject at the door, my bandwidth
costs would increase about 50%.
If it is important, that's an argument in favour of the envelope sender,
otherwise the argument allows use of headers.
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