Wednesday, July 28, 2010

Understanding the Exchange Server Spam Confidence Level

If you are sent to Exchange Server anti-spam features, or take a look at the head of an e-mail through an Exchange server, you probably met before SCL-term review.

SCL is synonymous with spam confidence level. It is the "score", which Exchange Server anti-spam, based on an e-mail to e-mail content attributes. This score is then used to make decisions about how to fight spam is suspected based on the thresholds configured by the Exchange administrator.

The SCL score is calculated and paid by the agent content filtering, which examines the entire contents of an e-mail messages for patterns that indicate to follow. Once the SCL score calculated was added to the header of the message.

In this excerpt from a sample header, you can SCL value used by the seventh

X-MS-Exchange Organization-SCL: 7

As the SCL is used by Exchange Server

The SCL score can then lead to specific actions occur. The Exchange server, the following actions on the SCL-base:

* Delete - delete the message without notifying the sender or recipient.
* Reject - the message is a notification to the sender, and not rejected, but the recipient.
* Quarantine - the message in a mailbox does not notify the sender or consignee under quarantine. Normally, only administrators by e-mail access to the quarantine mailbox.
* Junk - the message is sent to the recipients spam folder.

SCL scores range 0-9 with 0 meaning not to be spam, and 9 means very likely spam. There is also a -1 score for trust in e-mails. An SCL -1 were applied to messages sent between the beneficiaries of the same Exchange organization or external messages from senders in any way whitelist sent e-mail.

The SCL is then for each activity. However it is important to understand that actions are evaluated in a certain order.

Remove the first action should be assessed. If the SCL equal to or greater than the threshold, then delete the message is erased. If not, or if it is configured to delete a line, then moved to the next test - to reject.
Reject The second half measure will be reviewed. If the SCL is at or above the rejection threshold, the message is removed. If not, or if no threshold is configured to refuse, then move to the next test - a quarantine.
The third is to assess the quarantine measures in the third. If the SCL equal to or greater than the threshold of the quarantine, the message is quarantined. If not, or no-quarantine threshold is set, it is the Hub Transport server is specified as the server mailbox.
The fourth voice mail server is beyond the threshold of junk e-mail address where you have to configure the organization or the recipient of the e-mail. If the SCL Junk E-mail exceeds the threshold given folder for junk e-mail from the mailbox and the recipient can access via Outlook.

Where are the appropriate thresholds SCL

If you understand the sequence of processing for different actions based on LIBS can see how important it is to your configuration is correctly made. There is no point with a threshold of spam for seven years, when the e-mails will be deleted for SCL of 6.

Remove and allow thresholds should be established to remove most spam. The quarantine is voluntary, and I personally find it quite cumbersome, so I would not be better all possible, and instead, use the threshold of junk e-mail spam management less opportunity to extend the scope of it the end user.

It is also important to understand that the content filtering agent in the fight against spam, which previously, deterministic test done as connection filtering, blocking SMTP connections from known spam sources.

The filter agent connection will often as much as 95% of the spam filter so that the agent content is fine-tuning to remove much of the remaining 5% of the spam inboxes, without a number unacceptable false alarm.
Other applications of the SCL

The SCL can also be used as criteria for transport rules on the Exchange server. One way to use them is to create a transport rule, copies of all blind email, meets or exceeds a certain SCL to another mailbox. The contents of the mailbox can be used to estimate the number of false alarms, the current configuration can be created, and some are fine-tuning adjustments.

Another alternative would be a rule that transport is a disclaimer to all e-mails are spam threshold to switch to configure. The warning text can explain the process that users can move from a white list of trusted senders, so that in future e-mails are not treated as spam, without the help-desk support, contact.

In short, a detailed understanding of the SCL and how it is used in Exchange Server Anti-Spam e-mail administrator for the best application performance anti-spam.

Use Software Spam Protection To Completely Utilize Your Resources

Internet is a big deal and there is little doubt that inch There are several ways to make money with this medium, and online marketing is the keyword in the global electronic commerce. Perhaps the most aggressive and most cost effective media advertising and promotion of a product. Of course, there's nothing wrong with promoting their own product, but when it is the price of privacy of another time and money and not worry about individual preferences the receiving end is not desirable. Unsolicited emails or spam as the most famous is one of many examples of aggressive marketing campaigns online. The volume of spam protection that a level-spam software is a must for all end users to achieve administrative tools such as Anti Spam Exchange Server.

Basically spam is the term used any form of abuse, the electronic medium of the Internet, search engines, mobile phones, instant messaging to get, and so on. But e-mail is the most common and familiar for spamming. The entire process of spamming of two parts. In the first part of email addresses gathered from the Internet. It is in many ways, including spyware, spam and programs and immediately made. The second and most important part is to send bulk e-mails to those gathered e-mail. Because these addresses are arbitrary and e-mail sent to the bulk collection, in most cases, these e-mails to people who do not want to see them and are rarely delivered to profit. You can not stop receiving these unsolicited e-mails, if they protect against spam messages spam filtering software is effective.

In fact, there may be two different types of spam prevention. There are devices for e-junk mail that infiltrates into the system to avoid. They are expensive anti-spam technology in general by the companies, businesses, universities and mail servers are used for protection against spam. The levels of home computing, efficient software, spam protection is sufficient to get rid of spam.

If you have a Windows PC, it is very likely that more spam than other operating systems to get used to. Therefore, it is always wise to hand Microsoft anti-spam. The anti-spam software so that you do not spam in your inbox.

Articles About Exchange Server And Spam Prevention

One of the interesting things about writing these articles is that is has forced me to take a deeper look at Exchange Server 2007 antispam features and consider their effectiveness.

My view at the moment is that with the right attention and configuration Exchange Server 2007 can do a good job at preventing spam, but still falls short of most of the better third party products available.

Evaluating Anti Spam Software

As an important business decision, an anti-spam protection for email servers to the next step is the implementation to fit on an evaluation of available solutions on the market. In this post I'll describe a high-level approach for the implementation of further anti-spam in your organization.
Explore products available

If your organization has no awareness of existing anti-spam solutions on the market, then the first step to finding what is available. It's as simple as adopting a number of Google searches for terms such as trade "spam" or "Exchange anti-spam" (if you use Microsoft Exchange Server for example). You can also discover the products that are listed in articles and advertisements in banners on popular web technologies, web sites specifically dedicated to a business crowd.

Another approach is simply to go to ask your contacts in other companies you know to understand what they use if they had any comments on a fast to make their fortunes with the solution they have implemented .

Once you have a list of products you can learn a bit more written about them to find online reviews.
Suppliers Contact

After some of the available products, please contact the vendor for more information on product availability for the assessment of all local permits and pre-sales support they offer, either directly or through an affiliate. Often a claimant is more than happy to send representatives to your office to discuss their products and make even a demonstration.

pre-sales support is very valuable during the test phase and evaluation, so that any problems you encounter with the inexperience of the new product can be explained by experts.
Test phase

Before each assessment must be conducted in your production environment, you have a number of tests in an isolated test environment. This test will help you familiarize yourself with the installation and configuration of the product and gives you the chance of complications or problems that you see as incompatibility with other software you need to fix your servers.
Evaluation Phase

If you are you satisfied that the test product will not harm your environment, you can install it in a production environment and begin a more thorough process.Since you probably have a trial license can expire after 30 days or so and a plan to eliminate a product for others deemed that you should think about what production systems in the evaluation. To reduce the impact on other servers that you are considering a dedicated server for the assessment phase should be.

For example, time-limited evaluation licenses installed Microsoft Windows Server and Exchange Server hardware replacement parts or in a VMware environment, and installing anti-spam, then the temporary server. This prevents the subsequent evaluation of products of production systems.
functions to assess

A commercial antispam solution has many features which are useful for organizations, and should be considered carefully.

Integration - is the product fits perfectly into your e-mail (eg Microsoft Exchange) and directory (eg Microsoft Active Directory Server)? Is there a need for a standalone server running? Is to use Active Directory authentication, or a proper authentication system?

Methods of detection - is the detection of certain products, such as content filtering, block lists, filtering and Bayes RBL services?

Quarantine store - and not the product of elements in the isolated storage file system, a user database or a standard database such as Microsoft SQL Server? Do you have a license server database must be purchased separately for this computer? Do you want a specific permit backup agent to save the SQL databases?

End User Controls - must end customer self-service access to the quarantine? Users can configure their own personal block lists and white lists?

Reporting - should not be reported to a particular application of the console, or can be run from a browser? Perhaps compared to non-computer without administrator rights for the entire anti-spam system can be accessed?

anti-spam frameworks - the product supports the anti-spam frameworks such as SPF, DKIM or Sender?

License - How the product is licensed per server or per user mailbox? Is there a license for a single user, no matter how many emails?

Scalability - the product can be managed centrally, or it is installed on bridges over an e-mail for large networks?

Ease of use - how the product configuration and data are secure and how easy it is to recover if the server goes down anti-spam?
Completion

When spam solutions for your company plan, it is important to take time to evaluate possible solutions. Remember these simple steps:

- More information on products available on the market
= Call your service needs and access to demonstrations and pre-sales support to
discuss
= Run a test phase for the evaluation phase
= Test of licenses for Windows, Exchange and the anti-spam software with the
hardware or replacing a VMware environment to the impact on production to reduce
- Assess all functions in depth and consistent for different products

increase with the implementation of an appropriate assessment of anti-spam products can significantly reduce the risk that the product, implement the best solutions for your business.

How Do You Want To Host Microsoft Exchange Server?

If you use the benefits of Microsoft Exchange Server, and consider the use of this robust messaging and collaboration platform, please contact your installation options. These include:

- Self-hosted
- Shared hosting
- Private accommodation

Many large companies and organizations to invest in their own hosting environments from Microsoft Exchange Server. They found that the purchase of equipment and licenses, the installation of the messaging system and maintenance over the years is priceless. It does not mean that self-accommodation is always a bad option: If you have a large, well-trained staff and IT users are highly centralized, you can see that self-hosting is the best choice for you.
Why self-hosted Exchange is so expensive?

A well configured Microsoft Exchange environment requires two special controller Active Directory domain and at least one own Exchange Server. The three servers are under license from Microsoft Windows Server 2003 and Microsoft Exchange mail server should be allowed. In addition, you must each user license for Windows Server and Exchange Server. So before you check yourself, and implementation of hardware, a 20-user system costs between $ 4,000 and $ 5,000 in licensing alone. Even if you're the cheapest hardware, decisions that are difficult to understand, you can get the whole system for less than $ 6,000

The system described above is the basic elements of your messaging system. There are several important elements missing in the configuration, including:

Backup *
* Anti-virus / anti-spam
Internet Connectivity *
* Ongoing care and maintenance

A realistic price for the installation of state of advanced messaging and collaboration system is approximately $ 10,000.
So why any organization to Exchange Server?

Large companies enjoy economies of scale. The marginal cost of adding a domain user is about $ 100. This means that the systems of accounts with hundreds of e-mail, equipment and licensing costs can be extended to a wider audience of users. They are also equipped with IT staff managing the daily e-mail to a sophisticated monitoring system.
What is shared Hosted Exchange

A number of companies in the web, the large Microsoft Exchange Server has sprung infrastructure can support thousands of users. They offer a simple solution for individual users or small businesses, Exchange email hosting. They offer their customers usually a fixed amount per user. They also provide a certain amount of storage for each user account, and they have a small fee per user per month.

There are several advantages to a common environment Hosted Exchange Server. The most obvious is cost. A small organization now uses the scale to benefit only large companies. And since the monthly fees are fixed, there are no surprises. With access to all functions and features of Microsoft Exchange Server, most hosting companies provide access to services such as BlackBerry Enterprise Server and Good Link Server.

Shared Hosted Exchange has its share of disadvantages. , E-mail accounts for users who hosted a large and comprehensive information stores mixed with users worldwide. Several times, user accounts can be distributed across multiple servers, resulting in delivery delays are long.

These systems are a one-size-fits-all approach, which means your body has no control over how the massage system is configured. If you have a great piece of software that integrates with Exchange server, so you can forget to install. If you enable a protocol to take, or a major anti-spam solution, there is no way to do it.

Manage your email system is cumbersome, limited Web Control Panel. System administrators may prefer the flexibility of using Active Directory Users and Computers, System Manager, and other integrated management tools. Plus there are hundreds of specialized tools for managing Exchange and Active Directory, all shared hosting clients out of bounds.

Single Sign-On is a great feature of Exchange Server is not available for shared hosting customers. In a traditional Exchange Server environment, with their Active Directory user ID and the account is also used their access e-mail in the system. This means that a single login, a password can access their applications and data. This level of integration can not be shared with Hosted Exchange. For companies that are public or publicly expected or those who are subjected to checks, this service is not even an option.
Private Hosted Exchange: Get the benefits of shared hosting and self

Hosted Exchange with Virtual Private infinitely surpasses all the weaknesses of the two communes and self-hosted Exchange environments. Our server state of the art virtual hosting environment we create for each customer PHE complete messaging system, including two special server Active Directory and Exchange Server dedicated. And we do this for a monthly flat rate per user.

designated by the Client users access to the management of public services. Each part of Active Directory and Exchange Server can be customized to the needs of your business. All requests by third parties supported.

You can use any plan PHE VPN, and single sign-on assistance. We can set up a trust with an existing Active Directory or you can use your server to your Active Directory link in our data center. Anyway, you can enjoy all the benefits of the AD environment of a company to design and implement without.

When it sounds complicated, you should worry about. Our engineers will manage users without accounts, plans to implement free, and of course we can offer professional services to your e-mail system to integrate with the rest of your network.
How can we protect your organization and your data

Each virtual server is in our company VMware Virtual Infrastructure environment. The servers are equipped with technology that cluster hardware failures VMwareHA not lead to significant downtime. All data are stored on our SAN and cluster connected to the Internet via our redundant switching fabric. We take six photos of your data every day. And each server in our environment is an HP Propellant with redundant power supplies, coupled with our fully redundant power system that provides UPS and generators.

Sunday, July 25, 2010

Exchange Server Anti Spam Filters

Spam filtering can also e-mail described as the organization and development of e-mail on a specific criterion. A spam filtering software in the cost of incoming email, sorting on the causes and get spam (unsolicited emails). It is installed to filter spam for Exchange common PC, network servers and mail servers. Spam filters are also capable of exchange of recognition for its mail delivery of the defense. The role played by a spam filter spam e-mail and exchange are diametrically opposed in the sense that the effectiveness of email spam filter in front viable if they simultaneously realize the effectiveness of anti-spam filter recognized as outliers.

Spam can generally be regarded as unethical and the e-mail header information for the collection of Lakes. Spam e-mail survey conducted involuntary after the opening of Malthus spread of viruses and spy ware. These unsolicited emails usually plays the role of advertising for products and services from one company to potential customers are not specifically "an association for the company. It is common to spam messages to find that place the generally negative publicity for the company products and services. In such cases, senders / Apparatus years, the approach similar to spam mails with the container at the prospect of visiting a website and so download viruses on their computers in particular.

Besides the dissemination of malicious Trojan horses and viruses, spam is responsible for the survival of these filters spam and phishing examine the properties of being correct Middle protect the network and adding computer to the elimination of unwanted email. Exchange Spam Filter feature by comparing the parameters of configurable rules related to listing and inbound emails. The parameters of spam filter, for example, in April to check the subject line "used for incoming e-mails specifically Keywords in addition to the pharmaceutical and pornography products connected to spam others common.

Spam, the words are personal and often harmless, and attributes it to the year in general ISP spam filters to complications Growing to distinguish legitimate e-mail spam. There are still emails that are able to go through the mail from the Internet are related to retail and private networks. That is why going after a large number of network administrators in a company through spam filters and install the Sammie permanent residence end users. They require a lot "as a very configured to spam is taken, particularly those who pass through filters spam exchange, configuration and location online.

A similarity between Exchange spam filter is available and some programs in the sense that they are not all equal. It is a spam filter, which is currently regarded as intelligent and then the statistical method is based. A comparison is identified by the program between the amount of rules defined by the user and all incoming mail is spam based on prior mathematical probabilities. An exchange is to filter spam spam spam folder in e-mail, but the configuration is simple, it is legitimate to go to your inbox. User reviews the assignment before the error can be corrected. Exchange spam filter is able to report corrections and prevent the repetition of the fate of potential error.

Anti Exchange Server Spam, Go Get It

Large companies, personal server, to help with their business solutions, also within the PF spam attack. The amount of time workers for spam and businesses lose money to remove. The company is also under threat from spam, irreversible damage to the plant where the chaos and the unprecedented loss of work and money in the business may cause. To protect society against these hawker mail server the need for a server anti-spam Exchange is required. As any solution to spam other companies should be studied and supported.

Anti Spam Exchange Server is essential to your business environment and should be included in any event in the network security strategy. Especially when a large number of desktops in the business center of the installation of software, spam filtering is not integrated an easy task. Software so that appropriate and effective to fight against spam must be manually installed on the server for any computer, mail, online data and information received will be fully protected against spam on the server.

Professional help is the only solution for total protection against spam and security threats. The server must be assured that all information is filtered through the walls and fire against spam. Software Anti-Spam Exchange Server provides all the anti-spam solution needs. It offers an easy way to set up and is almost 98% of spam e-mails to detect with their latest update and filtering technology. In addition, it increases automatically to all environments e-mail.

The anti-spam filtering spam e-mails automatically and allows start and end positions for extended protection. Anti-Spam Exchange Server is easy to install and a few clicks, you are protecting life, easy and guaranteed no spam. Phishing e-mail and image spam are identified and managed messaging tools to help effectively in the care and management of your mailbox. In particular, the installation of Exchange Server Anti-Spam allows users to safely highlight the spam messages as junk. In addition, the price to pay for an anti-spam software are not much compared to the time and valuable resources spent on deleting spam. Now, after reading this article, you need the interest of anti-spam software does not understand what is now looking for. Get it now!