Reputation is an important thing. Often, especially on-line, your reputation is about all you have. With email it can be a make or break proposition. If your reputation goes downhill your email servers can be put on “blacklists” causing many mail relaying servers to refuse your messages. Hopefully you don’t do things that can get you flagged; the problem though is that you may not know that you have garnered a bad rep.
There are a number of services out there that can tell you if you have been marked as a spammer. These services will also mark senders that have a habit of sending out virus laden emails. Instead of going to each individual blacklist owner and finding out if you are on their list, the best thing to do is go to a site like MX Tool Box. Here you will find the most important tools you will need to assess your reputation. First is a tool that will tell you your “MX record“. Since most blacklists are done by IP address, not domain name, you need to know what IP address is really sending out your email. Depending on your setup this may or may not be your IP address as seen by websites. If you go to the MX tool at MX Tool Box and enter your domain name, it will tell you what IP address is registered to send out your email. Note that this can be your first hint. If you have other addresses sending out mail than the one specified some servers will refuse the mail.
Now that you have your IP address, go over to the “Blacklists” tab and put that IP in and hit “Blacklist Check”. This tool will go out and check most of the main lists to see if you have been flagged. What you want to see is all “OK”s. This lets you know that your reputation is still in tact. If you are flagged by one of the services, you will need to go to that service and find out why and what can be done to fix the rating. Know that fixing things is not always a quick or easy thing. Be prepared to do some work that will will talk about in future columns.
Assuming that everything is OK, you can also use some of the other tools on MX Tool Box to test the speed of your servers, the responsiveness, and best of all you can set up a proactive monitoring service that will check all of this stuff regularly and alert you if there is a problem. The monitoring service can even send you a text message if you email server goes down or becomes unresponsive.
Knowing what your reputation is, keeping a good one, and monitoring how you are perceived by others is just as important in the world of the Internet as it is in your personal relations. What’s more, in the world of electronic communications news travels fast so you most remain ever vigilant. There are lots of other services in addition to MX Tool Box, such as Habeas, Blacklisted Domain and others. They vary in price and effectiveness, so look around and see which one is best for you. What is important is that you use something.
In future columns I will be talking more about email integrity and other methods, such as identity verification and whitelists, that are being introduced to combat spam and increase email reliability. Please subscribe to the site feed by either RSS or email to stay on top of everything coming out. The links for those subscriptions are up in the top right corner of this page.