Category Archives: Uncategorized

Deprecation of SPFBL DNSBL

We’re always happy to investigate new blacklists to see how they work for our customers and how they provide additional information on our customers’ email deliverability.  If anyone ever has a blacklist that they suggest we add, please email us.

Over the last few weeks, we’ve given SPFBL, a Brazilian-based DNS Blacklist, a trial here at MxToolbox.  Like all new Blacklists, our trip included display of results with low severity.  However, during the trial we noted that the majority of customers reporting issues with this blacklist were due to simple, and routine reverse DNS issues.  For example, reverse DNS might point to a 3rd party load balancer application, which in no way should break email delivery.

Since this is the case, we’ve decided to suspend use of SPFBL until utility of the list changes.

PagerDuty is now integrated

Many of our customers over the last few months have requested that MxToolbox support PagerDuty as a notification mechanism.  We listen!  The most critical factor in determining what we build at MxToolbox comes from users like you. If you have any feedback on how we can improve our tools or monitoring please let us know.

We’re happy to announce that the integration is complete and ready to use!  PagerDuty integration is included in all paid monitoring subscriptions from the Basic Plan and up.

Free Users

Upgrade today to get access to more monitors and PagerDuty!

Paid Users

To integrate your PagerDuty account with MxToolbox simply head over to your alert notification policy. From there, scroll down until you notice the “Alert with PagerDuty” section and follow the link over to PagerDuty to authorize the integration. You will then be redirected back to MxToolbox on success.






Protected Sky Delisting

Recently, we’ve received a number of enquiries about delisting with Protected Sky.  For the last week or so, Protected Sky has had a maintenance notice reminding users that delisting is not available.  Over the weekend, they added another announcement:

Automatic removal will occur for IPs that are seen to be clean

MxToolbox Support is currently trying to contact Protected Sky for clarification, but we have an operating theory.  Currently, we believe this to mean that they have a system in place to automatically delist an IP address if it is not captured in one of their spam traps or reported by one of their customers as spam.

Once we have confirmation or update from Protected Sky, we will update this post with more information.

Recent Welcome Emails

While we were improving our unsubscribe code, we reset our email filters.  This had the effect of triggering a new email to all our existing customers.   You can disregard the email.  Nothing has changed with your account status.

Feel free to email us at anytime with any questions you might have.
MxToolbox Support

Deprecating CASA

Every so often we update the list of blacklists we curate.  This is part of our service to ensure that we provide the best information for our customers.

Today, MxToolbox is taking the CASA CBL lists offline.  As of July 2016, the China Anti-Spam Alliance has announced the deprecation of the following lists:


Since these lists will no longer be supported, they are no longer useful for making decisions regarding the delivery of email.

If you have questions about these changes, please contact our Support team.

MxToolbox Status Page

Every once in a while, we, like many other providers, go offline.  Sometimes, it’s on purpose, like when we add new features and rebuild the site.  Sometimes, it’s completely accidental, like when our datacenter has an outage*.  And, you’ve been patient with us when it happens even though we’ve given you little information, typically via Twitter.

Today, that changes.  Now, you can check on our status at any time through our new account.  Simply go to to view status.  You should get a page that looks like this:

Any product related issues will be flagged so that you can keep informed on the topic.  Even with this new tool, we will continue to update our followers on twitter.  We just want you to have as much information as possible.


*On that topic, we’re working to limit the impact of datacenter outages in the future by moving more of our tools to the cloud.

Better Insights from Updated Charts and Graphs

Here at MxToolbox, we’re big fans of good graphs and charts that provide insights, show trends and give you decision-making information.  And, it always helps if they look good.

We’ve recently launched an update to all our charts and graphs for MxToolbox Professional users.  Now, paid users get graphs that are much more interactive with much more information. In short, this:


Becomes this:


Each data set can be selected, deselected and the timeline adjusted right from the graph.  And, we think the new graphics are beautiful, too…

We’ve added some color to our monitor tagging system

If you are currently monitoring a large volume of IP addresses or hostnames for your organization or on behalf of your clients, one of the most important requirements is the ability to quickly group and identify related monitors. For that reason, we added the ability to create tags a few years back as a way to easily identify groups of related monitors. For example: if you needed to monitor blacklists for multiple clients, you can easily create a tag for each individual client and assign that specific tag to the monitors related to that client.

As there is a growing need quickly identify groups of related monitors, MxToolbox recently added the ability to specify a color for your tags.  Now, you can make it easy to visually identify groups of related monitors. After creating a tag you can assign it one of eight color types by selecting the color palette square next to your existing tags.

Screen Shot 2016-04-07 at 12.17.13 PM

To start adding color to your tags simply login to your account and visit the Tag Manager by selecting Tags from the black navigation menu.

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Tags are available to all monitoring accounts starting at our MxWatch Basic Plan and above.  We hope that tags, and now colored tags, will make it easier for you to do your day-to-day tasks with MxToolbox.

Availability Report: Uptime % and Downtime for all your monitors

These days website or app uptime is a crucial aspect to any business online. If your website goes down for any reason your customers and business suffers. MxToolbox Monitoring offers two ways to report on the uptime of your servers:

  • Uptime Reports
  • Availability Reports

Uptime Reporting for Web, DNS, and other critical services give you Summary Uptime and Downtime reporting to protect on each monitor.  Simply select the monitor to see how we protect your business and customer satisfaction.   Uptime monitoring tracks performance over time in order to compare how your server is performing today vs last month or last week.

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Our Availability Report allows you to view the Uptime %, Downtime, and displays the current status for all your monitors. The Availability Report allows you to specify the date range so you can recall historical Uptime/Downtime statistics and issues.  This is particularly valuable when you want to show upper management how well things have been running over the past quarter or year or justify additional expenditures for servers.  In addition, you can access specific monitors directly from the Availability Report to checkout current status and specific issues.

With our new Availability and Uptime Reporting, MxToolbox Monitoring gives you even more insight into how your servers, and business, are running.

HTTP/S Screenshots: Lookups, Monitoring, History, Alerts

If you’re a fan of our HTTP/S lookup tools, you may have noticed that we added a new feature: Screenshots. Now, when you run an HTTP or HTTPS lookup on a domain you will see a screenshot of what the domain looked like when we ran the test.  If there is an error, you now have more information on what error may have occurred.



For example: if your server was down when running the test you will see a screenshot of what your customers saw as well as any error codes.

We’ve also added this same capability to our monitoring system!  Now, when we verify your server or website is down, we will include a screenshot  in the alert notification we send you. You get a snapshot of what your customers see when an outage occurs.  Over nights and weekends, on-call teams will be able to directly see what is going on right away and make the best triage decision for the alert.

In addition, monitoring customers can also access a historical screenshots for HTTP/S monitor outages.  Whenever we capture and verify a transition event, UP or DOWN, we store the screenshot in your monitor history.  Now, you will always have a view into site performance and customer experience!