By Samuel J Brown
Exchange spam filters are generally simple though efficient solutions that use various methods for identifying incoming mail as spam. These methods include blacklist checking, keywords matching, blocking by identified spam hosts and checking mail in search of multiple domains.
The respective database for instance MS SQL or MS Access may be used for the storage of the spam identifying rules as parameters. These have a capacity of being run concurrently with the active directory to ensure a provision of additional Exchange spam filters and spam detection capabilities. The default database may be used by spam filters for the storage of keywords.
Keyword checking is a widely used method for filtering spam and works by scanning the body and subject of the email. The use of keyword combinations or conditions is an ideal solution for enhancing filtering efficiency.
A combination of those words whose appearance in the email is guaranteed should be specified in order to block any message that is inclusive of this combination of words. Filtering through keywords as a form of Exchange spam filters is an essentially useful option since it enables the defining of entire phrases in a bid of filtering emails accordingly.
Spam filters for Exchange equally permit clusters of senders to be defined since this is email that will always be delivered when the filtering is overridden. In addition to the capacity of screening messages that are HTML-coded after their conversion to simple text, an entire domain can equally be included in the domain listing of 'Allow Always'.
This is a vital solution since the domains of potential customers, suppliers and trading partners may be included to ensure that the communication is effective while partially blocking other email domains.
The web console of certain Exchange spam filters plays the role of a management portal, which is similar to an MS (Microsoft) Management Console that is for Microsoft products. It enables keywords to be edited and statistics viewed on blocked or delivered messages.
This management console equally has the capacity of being used for altering the spam filters' registry values. The administration console for instance provides the capability of setting-up the database responsible for storing the filtering information of the inbound email.
By configuring bad recipients, disposable and anonymous email addresses may be stored hence stopping spam. Keywords may be stored as selected criteria in a bid of blocking any messages that may contain keywords in the BCC, CC, TO and FROM fields.
Exchange spam filters use filters on the basis of the message body's contents for blocking unwanted information. The blacklists/whitelists is a spam filtering feature whose functionality is simple and should be part of your Exchange Server spam filter.
A whitelist is generally a listing which is inclusive of every address from which the account user wishes to receive email from. Functional domains, entire domains or email addresses may be added to ensure that email from particular domains or senders is never depicted as spam.
A blacklist on the other hand works in a similar manner to the competitive alternatives and is basically a listing of addresses that an account user never wishes to receive e-mail from and chooses to block using the Exchange spam filter.
In order to reduce the amount of spam that gets through to your corporate mailboxes, it is important to choose the right exchange spam filter. A solution with an efficient exchange spam filter can help in almost eliminating spam from your inboxes. GFI MailEssentials boasts of a 99%+ spam detection rate and that is the efficiency you need to look for in the solution of choice.
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The Top Anti Spam Filters For Exchange
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