HTTP
HTTP HTTP - hyper text transfer protocol, a way to transfer website data via Internet.

HTTP - hyper text transfer protocol, a way to transfer website data via Internet. At first, was created for transfer of HTML documents, now most of website data (audio, video, images etc.) is downloaded through this protocol. HTTP has several methods - to check a website, to get the data from the server, and to upload some information from client to the site. More about them you may find in this article. HTTP has its secure version - HTTPS

This protocol is used by clients to review web pages. Thus, to check a website, we should use it too. Website monitoring services, like HostTracker, perform HTTP checks to make sure that the site is operating well.

  • CM.Glossary.WebsiteMonitoring
  • CM.Glossary.HTTPS
  • CM.Glossary.HTTPMethods
more glossary
"To have a record of up-time of a Web site seems a very important concept. So what you offer seems interesting."
- Gerardo
Perhaps your IP-address is already blacklisted but you don’t even know ...

Anyone can be blacklisted – so what can you do? How can you detect such problem? Are there any protection mechanisms? This is what this article is about.

Are you sure that your domain isn’t currently listed with some anti SPAM-database? We recommend you to check this out!  As you can be one of those who accidentally fall into being blocked due to spreading spam, malware, viruses or just having dangerous, illegal or prohibited content (links to such content) hosted on their pages. Apparently, anyone can be blacklisted – so what can you do? How can you detect such problem? Are there any protection mechanisms? This is what this article is about.

Why is this happening?

There are tens of thousands of different DNSBL-servers up for grabs out there and they all have their own set standards and criteria for which IP should be blacklisted. Moreover, these conditions are constantly changing. Therefore, there’s no guarantee that even a law-abiding domain which meets all standards of copyright and trademark laws, the laws of privacy and publicity, and other applicable regulations and statutes of law, one day wouldn’t be filtered out by the search engine as one that spreads spam.

Actually, HostTracker’s team recently faced the risk of being banned too. HostTracker, in its capacity as a website monitoring service, sends daily many various reports to the people that requesting them, hence it was easy to determine that some of our emails hadn’t been delivered and were dumped into a spam folder.

So what should you do?

Understanding the problem is the first step to fixing it. So it’s crucial to be aware of the warning signs of listing threat and be able to quickly take steps to cut back if you recognize them. Since we recommend adopting our new feature - "DNSBL" on the "Check site instantly" bar - we have implemented just for you:

This option is not exactly brand new, as there are dozens of different check services out there (for instance, Mxtoolbox), which offer a convenient help in testing whether your domain is on some blacklists. But soon we realized that we also needed to arm HostTracker with this check, as without having had such tool in place, we were flying blind.

In light of what was written above, we provide the illustration of how the "DNSBL" check works:

If HostTracker detects some suspicious activity from your IP address, you’ll be notified immediately with an alert of a possible listing reason. For you it means - the ability to track the reason why the site was blocked to its origins.

Usually, the domain will be blocked not at once but only after a thorough analysis of many factors. If you have already discovered your IP on one or more blacklists, don’t panic, more often than not, all you need to do is to follow their specific removal process. That implies, you should visit the corresponding blacklist's website and, following the removal instructions, enter the domain name and press "Delist". Additionally, you may need to contact the blacklist with a removal request. Note that, previously you have to resolve all issues that caused the blacklist.

So, if you happen to discover your IP address involved in spamming – resolve the underlying issues and you’ll be removed automatically, once a certain period of time elapses. How to stay protected and off of blacklists? The best option is to use PTR or SPF for messaging, as this’ll eliminate the likelihood of your domain name getting fraudulently spoofed and abused by spammers, or blocked for appearing to use a dynamic IP address.

There's no single cause of being blacklisted. Generally speaking, if your IP has been tagged illegal accidentally, the removal process won’t take much time and effort. But it is essential to be proactive, so that to be able to act fast and be in tune with such situations. The sooner you find out about the issues, the easier they are to deal with and the more likely that your domain name won’t be deemed illegal among the entire set of DNSBL databases. Use our new option "DNSBL" on the "Check site instantly" bar to be always aware of the "status" of your resource and never be tossed and turned by the tides of website hassles and outages. Remember, we’re looking forward to any interesting comments and suggestions regarding our service and its work.

 

more blog
Thank you for feedback!
 
Sign In
Sign Up
Prices & packages
Our monitoring network
Home > Glossary > ContentCheck
Content CheckContent check is a way to check the presence of specific info on the page.
Content Check Content check is a way to check the presence of specific info on the page.

Content check is a way to check the presence/absence of specific info on the page. It helps to check not just the page itself for accessibility, but the performance of the site too. It is useful for sites with complicated structure - which contain many scripts and data that is stored in database or other off-site storages. In this case, there is possible cases when the page itself is working fine while some of the linked resources are not available - thus, some info on the page is missed.

HostTracker provides tools to solve this problem. You may create ContentCheck task and provide specific keywords for monitoring:

There are several important things on that screen:

Content Check - set of comma-separated keywords to look for.
Advanced Content Check option - useful for immediate detection of the reasons of a problem. In case of appearance of the keyword, the phrase, previous to the keyword, is sent you as the result of the check. For example, you enter keyword exception and select this option. Somehow, on the page appears the statement: Wrong SQL statement on the line 123 exception. In this case, you get an alert saying Wrong SQL statement on the line 123.
Conditions Field - allows to specify conditions for set of keywords. You may set to detect an error in case of presence/absence of all entered keywords, or just any of them.

For monitoring the presence of images, videos, execution scripts - you may choose a keyword from their description, or add a special short script which will return Error or other keyword if something is missed.

Restrictions:
Only first 10 Kb of page are analysed
Only first 120 characters of each line are analysed

  • CM.Glossary.Uptime
  • CM.Glossary.WebsiteMonitoring
  • CM.Glossary.Uptime
  • CM.Glossary.WebsiteMonitoring
Share:
Send to Twitter Send to Facebook Send to LinkedIn Share on Google+
Blogs:
HostTracker blog HostTracker page on Facebook