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Category: Network Services Monitoring

A Tale of Monitoring DNS Blacklists

For George, the clean-up is just beginning. He is not even yet aware that his domain is blacklisted. All he knows is that he can’t send out additional emails, the update email on the company party that evening is now a fire-drill, and his boss is giving the system administrator and him the stink eye. The problem of not knowing for hours that your site has appeared on a DNS Blacklist (DNSBL) and that email—and, even worse, potentially website visitors—are being rejected is a problem with both primary impacts and multiple secondary impacts.

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June 27, 2014

Innovations in Microsoft Exchange Monitoring

Microsoft Exchange continues to grow in popularity, but until recently active monitoring via full round-trip processes have been lacking in the marketplace. As a result network administrators have found it difficult to accurately pinpoint Microsoft Exchange issues effectively. Dotcom-Monitor’s Microsoft Exchange Monitoring, actively monitors both the availability and performance of Exchange components and provides alerts and diagnostics information when an issue is detected. Among a wealth of other features, the solution includes the industry’s only tool for monitoring ActiveSync externally, so it mimics the same experience a real user would receive.

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May 20, 2014

SIP Monitoring: VoIP Market Growth creates a need for SIP testing

The VoIP marketplace is growing. If your organization uses a SIP-based VoIP solution its likely you’ve experienced issues in the form of dropped calls, or the inability to receive calls. Dotcom-Monitor’s SIP monitoring service tests a SIP-based VoIP system by actually making SIP test calls and measuring the results, allowing you to get back to work and know that your VoIP system is continually online.

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May 7, 2014

CDN Monitoring and “Cheshire Cat” Websites

How can you tell if the CDN you’re utilizing is actually paying dividends in terms of speeding up delivery of content to your website users? CDN monitoring can help the IT department—which has lost significant control over the servers that store the content because of CDN use—track key metrics to determine CDN performance and see if the CDN is living up to its SLA.

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May 1, 2014

Another Neustar UltraDNS Outage

April 30, 2014 – Neustar UltraDNS Down – Dotcom-Monitor is tracking a Neustar UltraDNS outage at this time. The UltraDNS outage appears to have started at approximately 10:34 am CST and extended to 12:47 noon while stabilizing. (UPDATE- As of 4:07 pm CST UltraDNS continues to experience DNS resolution instability.) The UltraDNS issue

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April 30, 2014

The Rising Importance of Media Stream Monitoring

Regardless of how your company uses streaming media, media stream monitoring is a requirement to protect the performance, integrity and availability of video streaming services. Because online media streams come in multiple online stream formats and codecs across browser platforms, a robust media stream monitoring solution that monitors content from the perspective of the end user is required.

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April 8, 2014

Target Credit Card Breach Impacts Web Performance

Dec. 19, 2013 – Dotcom-Monitor, a web performance monitoring company, detected a short spike in connection times to the Target.com website that occurred on Dec. 18, 2013 at approximately 12:30 pm CST. The spike in connection time at the Target.com website corresponded to widespread announcements in the media that Target had suffered a massive data breach. According to news sources, such as the Huffington Post, Los Angeles Times and others, Target credit card systems were hacked and user information was exposed in its entirety, including security codes (CVV numbers), credit card numbers, names, addresses – to unknown perpetrators.

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December 19, 2013

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