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1. How reliable is Katharion?
1. How does Katharion determine
which messages are spam?
1. What is involved in implementing this spam & virus filtering service?
All that is necessary is a change in your DNS records, so that the 'MX' (mail exchanger) entries for your domain point to Katharion's systems. After that change has been made, your email will be redirected through Katharion's filters before being automatically delivered to your mail server. 2. What is an MX record?
A mail exchanger (MX) record identifies the location of a domain’s mail server. The record directs computers on the Internet where to send email for a specific domain. Unfortunately, the record also informs spammers of the location of a domain’s mail server. By changing the MX record, a company can re-route its inbound email to Katharion, which filters messages for spam and viruses and then delivers the clean email to the company’s mail server. 3. Is there any downtime necessary to implement Katharion's service?
There is no downtime involved in implementing Katharion. The setup process is fast and completely seamless, and does not affect or delay your inbound or outbound email. 4. How soon will we start seeing results?
Typically Katharion spam and virus filtering system begins working within a few hours of the DNS change, and often within a few minutes of that change, for a significant percentage of your inbound email. In order for all of your inbound messages to be filtered, the changes to your domain's MX record must fully propagate through the Internet. The Time-To-Live (TTL) setting within your domain's DNS specifies how quickly these changes should take effect; TTL values generally range from one hour to 24 hours. There is no interruption to your mail flow during any of this time.
Reliability and Server Back-Up
1. How reliable is Katharion?
Katharion's network and software architecture have been designed to handle both the rapidly growing volume of email and the heavy peak loads that are characteristic of SMTP traffic. Katharion has no single point of failure and provides a 99.999% uptime guarantee. 2. Will we experience delays in receiving messages?
No. Katharion typically processes a message in less than a second. Customers do not notice any delays in the delivery of email. 3. What happens if our mail server goes down?
In the event that a customer's mail server is inaccessible, the Katharion system acts as a message queue so that emails will be forwarded to the customer once the mail server is back online. Katharion uses a timing algorithm to gracefully deliver those queued messages, to ensure that the customer's mail server is not overwhelmed with a sudden barrage of inbound mail. 4. What if I need access to email while our organization's mail server is down?
In addition to the queuing described above, Katharion can provide full-fledged backup mail service so that customers can rapidly regain full inbound and outbound email communications in the event of a prolonged outage or other problem with their primary email system. Please contact Cord Hosting to establish this service feature.
1. How secure is the privacy of my e-mail?
The Katharion service does not affect your email's security. First of all, email itself is inherently not secure. Email messages are sent in clear, unencrypted plain text format across many networks and often through multiple mail servers before arriving at their destination. Essentially, Katharion's service represents only an additional 'hop' on the Internet before email is delivered to a company's mail server.
Moreover, Katharion does not back-up or make copies of email messages, other than temporarily queuing messages when a customer's mail server is down. Your email messages are not accessed by anybody other than the intended recipients, and the log files maintained by Katharion contain only message header information rather than message contents.2. Can Katharion improve the security of our email?
Yes, Katharion can provide email encryption services via the StartTLS protocol, so that email messages are transmitted in a secure, encrypted fashion rather than in plain text. Please contact Cord Hosting to establish this service feature.
Spam Detection and Handling
1. How does Katharion determine which messages are spam?
Katharion employs an extensive range of tests on incoming messages to detect spam. These include traditional, widely used approaches for spam detection such as message authenticity checks, header analysis, message signature analysis, an artificial intelligence Bayesian engine, databases of domain names and addresses used by spammers, and whitelists and blacklists. Katharion has also developed advanced, industry-leading techniques such as real-time message source analysis, graphics analysis, and user-based message profiling. 2. What happens to messages that are detected as spam?
You have several options for handling the spam messages detected by Katharion. Junk messages can be 1) redirected to a Katharion-hosted quarantine, 2) redirected to an alternative email address such as email@example.com, 3) identified as spam in the subject line and delivered to the intended recipient, or 4) deleted. These options can be configured company-wide or on a per-user basis, and can be changed at any time. 3. What percentage of junk email does Katharion catch?
The detection rate varies by customer and is based on the email traffic patterns for a given domain, and on Katharion's aggressiveness for that domain (customers can configure how aggressive the filter should be). On average, Katharion blocks over 98% of junk email and 100% of email-borne viruses. 4. What are whitelists and blacklists?
Whitelists are rules that allow messages to be delivered based on their 'from' email address or domain name, regardless of content. If you would like to guarantee that all messages from yourcustomer.com, for example, will not be flagged as spam regardless of what those messages contain, you can simply add that domain to your whitelist. Conversely, blacklists are rules that block messages based on the domain name or email address of the sender.
1. Is Katharion a substitute for our current anti-virus software?
We do not recommend that customers eliminate their current virus protection, in large part because viruses can be spread through means other than email. That said, over 90% of viruses are transmitted through email. As viruses have become more prevalent and more damaging, organizations increasingly are adopting a layer of protection at their Internet gateway (as Katharion provides) as an additional defense. 2. How often are Katharion’s anti-virus definitions updated?
Katharion's anti-virus definitions are updated every five minutes. These frequent updates can protect an organization against fast-moving viruses that may not be caught with an internal anti-virus solution.
Compatibility1. Does Katharion work with Microsoft Exchange?
Yes. Katharion works seamlessly with any mail server that you are using. As a managed service, Katharion is compatible with widely used programs such as Microsoft Exchange, Novell Groupwise, and Lotus Notes, as well as any other mail server software that a customer may be using. 2. Does Katharion support Macintosh, Linux, or Unix environments?
Yes. Katharion is a service rather than a product, and no software needs to be installed on your mail server or at workstations. Therefore, Katharion supports any mail server, any email client, and any operating system(s) in use at a given organization. 3. If my company hosts email at an external provider, will Katharion work?
Yes. Many companies use an externally hosted email server, in addition to or in lieu of an internal mail server. Katharion works correctly regardless of where a company's mail server or servers are located.
1. Do we need to integrate Katharion with our existing mail server?
No - Katharion will work successfully without any changes to an organization’s existing mail infrastructure and without any integration with that mail infrastructure. For ISPs and enterprise customers, we recommend that Katharion’s user management and authentication functions be integrated with the customer's infrastructure to reduce the need for any ongoing management regardless of the number of end users. 2. What options for integration does Katharion provide?
Katharion has been architected to integrate seamlessly with a wide array of infrastructures. This ensures that email addresses, aliases, user preferences, and authentication information can be automatically synchronized between Katharion and an organization's internal system(s). In addition to integration via standard protocols such as LDAP and LDAPS, Katharion offers a web service that allows for programmatic domain and user management from virtually any application. 3. Are there any extra charges for integration?
No. Katharion views integration as a means to ensure ongoing ease of management for customers, and all features related to integration are included in the standard pricing for the service.
1. Are there any set-up fees or implementation costs?
No. Since Katharion is a managed service, there is no hardware or software to purchase and no one-time fees. There is simply a per-user price, based on the number of users who are enrolled for filtering. To receive a price quote, please contact us online or via phone at 949-718-9385. 2. How is my organization billed?
Katharion is a subscription service. Customers are billed monthly by credit card and Cord Hosting will handle all of the charges. All credit card charges will appear on your monthly credit card statement as "Cord Hosting, Inc." If you do require an invoice for billing please contact Cord Hosting. 3. Do I have to pay for aliases?
No. Alias accounts are filtered for spam and viruses, but they are not billed.
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