13 Sep
2008
13 Sep
'08
11:58 p.m.
*Hobbit* wrote:
How do you alert mail server operators who are smarthosting their e-mail through you that their outbound messages contain spam?
You don't let them falsify their envelope or headers to contain fields utterly unrelated to your own infrastructure, for starters. They try it, their mail bounces. It's a very rare piece of spam that actually comes from who it says it comes from anymore.
Are you suggesting that only ISP domains should be allowed through? (eg. username@isp.net.au) If you're forcing people to use your mail servers as a smart host then you wouldn't be very popular ... MMC