E-Mail Spam Blacklist: Are You On One?

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Spam filter buttonSpam blacklists are lists of IP addresses used to keep track of servers that have been known to send out large amounts of spam (unsolicited email). These IP’s could come from your ISP (Internet Service Provider), since they typically offer email accounts and/or websites with their service plans. It’s therefore not uncommon for spammers to take advantage of these accounts. Large ISP’s especially are more likely to harbor spammers simply due to the large number of subscribers.

It’s important to know if the IP address your sending mail from is on a blacklist, because it will impact how many people receive your emails. If you’re sending an important email to someone, you want to make sure it arrives and doesn’t end up in junk folder after junk folder. If you’re running your own web server, you especially want to make sure your IP is not on a blacklist because you don’t want your customers getting spam blocked. This will hurt your email service reputation. If you’re a casual user with a free email address such as Hotmail, Yahoo, or Gmail, you also want to make sure you received an IP block that hasn’t been blacklisted. While educational (.edu) email accounts are less susceptible to being blacklisted, no one is immune. Regardless of the origin of your email account, you want to make sure you haven’t been blacklisted.

How Can You Tell If You’re On a Spam Blacklist?

Visit the MX Toolbox Blacklist Check page and enter the IP address of your server to see if it’s been blacklisted.

Are you Hosting Emails?

If you’re a web designer or hosting provider and want to host your own emails, without having to deal with the headache of providing tech support to email clients that are facing blacklist issues, consider signing up for Rackspace Email. You can get it for as little as $2 per user per month. They offer 24/7/365 phone support, white-listed email servers, spam filtering using the Cloudmark system, and more.

Take the headache of having to stand by the phone and answer the same question over and over again, and offer your clients reliable email service. You’ll recognize the Rackspace name – the same company known for its high level, fully managed hosting packages. They bought the email specialist company Mailtrust a couple of years back and enhanced their service offerings with dedicated Rackspace support personnel.

Looking to Stop Spam to your Outlook or Outlook Express Inbox?

Check out Spam Bully for free – it lets you fight and control spam, freeing up your day for more important tasks. Spam Bully offers:

  • Bayesian Spam Filter – Intelligently knows which emails you’ve received are good and which are spam by using artificial intelligence and server blacklists. Makes sure good emails make it to your Inbox.
  • Allow/Block List – Decide who and what makes it into your Inbox.
  • Punish/Bounce/Report/Challenge – Get back at spammers by increasing their costs, returning their spam, and reporting them to the servers they came from and the FTC. Email a special password to an unfamiliar sender that they must correctly type in before their email is allowed to your Inbox.
  • Auto-Delete – Optionally you can just delete spam messages instead of sorting them to a spam folder. You never have to see a spam message again.
  • Cellphone Forwarding – Forward only good email to your cell phone.
  • Statistics – Comprehensive graphing and statistics shows you how well SpamBully is working.
  • Multi-Language Interface – Easily and automatically convert Spam Bully into English, Spanish, German.

You can try it for free. Give Spam Bully a try now!

About The Author:

Alex has been involved on the business side of the internet since the early 2000's. He holds both a Management Science degree from the University of California at San Diego as well as a Computer Science degree from NJIT.

We Rock Your Web had its roots back in 2004 as the tech blog for a web design and development company Alex founded that has grown and evolved into the parent company of We Rock Your Web.

While his foundation is rooted in web development, his expertise today lies in content and digital marketing, SEO, organic and paid search, analytics, and publishing. Alex is an avid tennis player, nature enthusiast, and hiker, and enjoys spending time with his wife, friends, and dogs.

Disclaimer: This website contains reviews, opinions and information regarding products and services manufactured or provided by third parties. We are not responsible in any way for such products and services, and nothing contained here should be construed as a guarantee of the functionality, utility, safety or reliability of any product or services reviewed or discussed. Please follow the directions provided by the manufacturer or service provider when using any product or service reviewed or discussed on this website.

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Oldest Most voted
December 26, 2009 4:29 am

This is not a good idea when everything can be a “source” of good money.

February 23, 2010 1:42 pm

I must admit, I do receive lots of spam each day and sometimes I’d like to report their IP’s but I never do. Mail today offers a lot of filters and other options so we can get our spam in the spam folder so we don’t have to see it everyday.


Mathew Farney

May 9, 2009 11:25 am

There are so many anti-spam utilities out there – is Spam Bully really the best? What do you guys think?

March 27, 2009 4:30 pm

Ahhh, what a pain! Someone hacked into my Hotmail account – okay, it’s probably my own fault, considering my password was easy to guess. But immediately spam emails were sent out to everyone in my address book, and now I’m afraid my email address may have been blacklisted. In fact, I received a notice from one of the servers the spam went to saying I had been blacklisted. What can I do about this?

We Rock Your Web
April 1, 2009 6:43 pm

ISP’s (Internet Service Providers) have understandings with the major public email providers – ie. Hotmail, Yahoo, Gmail, etc. that puts them on a special filtered list, so in most cases emails are not blacklisted. Why is this done? Because the public (free) email providers wouldn’t get much business if their clients couldn’t send any mails out – ie. if they never arrive.

Most likely your emails will still receive their destination. However, this doesn’t mean they won’t end up in your recipient’s junk box. In most cases, emails from free email domains (those listed above) are automatically categorized as junk, because of the high likelihood of spam mail originating from them.

March 20, 2008 2:18 pm

great blog, very interesting information.