Spammers using my domain names in their "from" line in email. What is the best way to put a stop to this?

There is no way to put a stop to this practice. The outgoing mail protocol SMTP does not require authentication (login) to a server so a sender can use any e-mail address that they wish. You could, for example, use [email protected] as your e-mail address.

If you do this you will be able to send as president@whitehouse. Gov but unable to receive mail sent to that address. SMTP servers can be optionally set up to require authentication and to restrict sending from a predetermined set of IP addresses but this does nothing to prevent the problem that you describe.

These spammers can easily set up their own unrestricted SMTP servers or more likely use misconfigured servers or compromised computers from around the world to do their dirty work. You could reduce some, but not all, of the impact this practice has by using SPF records on your name server but in practice I have found this to be mostly ineffective.

Well, if: 1. Your domain name is an important part of your brand 2. You have sufficient funds to retain good, attack-dog lawyers 3.

You can actually trace the spammer back to an entity in the same legal jurisdiction as your company 4. Said jurisdiction has laws that protect your company's brand/trademark/name, etc. ...you could try suing them or issuing an injunction to get them to stop. Will that stop them?

Probably not, but maybe, just maybe, you'll win a stunning, moral and hopefully legal victory against these scum and ride the media attention to promote your brand/company/domain, etc.

Unfortunately... no. I had this done to me a couple times... I've found that, all you can do is wait it out (and send those spammers some negative energy).

You might want to try to dig up some more info on them, and post the details on your sites with a little corner-tab to click on for more info, which explains the problem, and lists the culprits (as much as you know), to at least reveal their nefarious activities. Beware, however: because spammers are already some of the most desperate losers^Wpeople on earth, they might seek "revenge" for any actions you take against them. A general "what is spam and why should you hate it with every fibre of your being" page on all your domains would help educate the "unwashed masses", and nothing hampers spam like education.

;-).

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.