spam

What to do if your domain name or mailserver IP is listed in a DNS blacklist somewhere

You find yourself in a situation where email you send from your domain is being rejected by some remote mail servers with a message that your domain is listed in a DNS based blacklist.

The bounce message will contain a line like this:


550 Service unavailable; [your domain here] blocked using some.domain.rbl

There are two things you need to do in order to restore your mailserver integrity:

Somebody is sending spam with my domain name in it!

Sooner or later, this happens to almost everybody: you own a domain name and suddenly you start getting weird email bounce messages and you realize the unthinkable: somebody has sent out an email spam with your domain in the message "From" headers! What to do?

First step is to relax. this happens all the time, and unfortunately it is now your turn. Spammers use randomly selected domains in their From headers or sometimes deliberately target a victim domain (called a "joe job"). Keep a couple things in mind:

How do marketers and spammers get my personal information after I register a domain name?

It never fails: somebody registers their first domain name and within 24 hours they're getting unsolicited email in their inbox and eventually more marketing material via postal mail.

What happened?

Most people's initial reaction is to blame their domain registrar, assuming their personal info has been sold. This is extremely rare. Most domain registrars really hate spam and unsolicited email.

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