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What is SPAMGUARDIAN.NET

What is Spam Guardian?

SpamGuardian is a i4Market proprietary spam system utilized on all i4Market hosting servers. This system is not deployed on any colocation accounts.

Why is my email being blocked?

Your email to any i4Market server could be blocked for a variety of reasons, some of which are listed below.

Your IP address is listed in one of the Realtime Black List (RBL) List. Currently i4Market uses the following RBL's:
- SBL
- SURBS
- Spamcop
- SpamHaus
- NJABL.ORG
- Our own collected list from spam already received by our servers.

To check to see if your mail server IP is listed click here.

Your mail server is not setup correctly and exhibits one of the following conditions:
- No PTR record for your mail server name. All mail servers connecting to i4Market servers must have a reverse DNS entry or mail will be rejected.
- The IP address connecting to our mail server does not resolve to a valid domain name.
- The mail server connecting to ours is rude. Our servers will respond with a valid HELO response and ask the connecting mail server to waiting 4 seconds before it starts to send mail. Mail servers that do not adhere to this condition will be limited in bandwidth for sending mail or temporarily blocked. This helps in 2 ways... mail servers controlled by spammers usually do not want to wait and will either go on to the next victim or start sending data anyway which in both cases the spam is prevented, this short period gives our servers time to do the necessary test to insure the legitimacy of the sending mail server and domain.

OK, I am listed in the RBL, how do I get off the RBL List?

You will have to check the RBL's website as every RBL list is different. Some will remove your server right away, some will make you pay a fine and some will not remove you until the spam that is coming from your server has stopped and/or the offending account has been deleted. If your email specifically states that it was listed in spamguardian.net please contact us for removal instructions. Being removed from any RBL does not guarantee that your IP will not be relisted if found to be sending spam again.

So what exactly happens to an email sent to i4Market Servers.

Here are the steps in the order of how they are performed:

1	Your email server connects to ours and our server sends a valid HELO response with a request for it to wait 4 seconds before sending data.
2	Our server checks with the SpamGuardian Server which looks up the IP address of the connecting server in the RBL List, does a reverse DNS check for a valid PTR record and also checks to see if there is a valid domain associated with the IP (forward DNS). All these test must pass before we will start accepting data. If they fail, the mail will be rejected and the connecting server will be told of which test has failed.
3	Your email server waits 4 seconds before transferring data.
4	If all test have passed and your server is polite enough to wait for the requested time period, our server will accept the message.
5	The accepted message is then passed to our SpamGuardian Filters which then check over 5000 test and conditions both inside the email and out including header and text analysis, Bayesian filtering, DNS blocklists, and collaborative filtering databases. It will be checked against content, such as words like Viagra, Sex, etc... it is checked for list URL's that are known spam URL's... and many others such as removing any web bug images etc.
6	After it goes through these 5000 or so checks it is giving a total score. This score is assigned using a neural network trained with error back propagation. The score is then checked against the users Spam settings in their control panel. If the SpamScore is higher than the Spam Settings then the mail is put into the users Spam folder and the user may never see it, if the Spam Score is lower than the Spam setting then the mail will be delivered to the users inbox.

Contact Us Today!
1-866-626-8120