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Vade Irish Web Hosting > Support > FAQ

Frequently Asked Questions

Q. What is Vade's Distributed Network Infrastructure?
A. Here at Vade we realise that no system is perfect and that problems do occur. We don't hide behind this fact. From power outages, to network outages, to human error, to even natural disaster, no matter how hard you try and how much redundancy you build into a system, problems will occur.

To combat this, we physically distribute all of our core network services to maintain as much redundancy as possible. Each service is placed on redundant machines in physically separated locations, using different network providers. We then further spread our monitoring services to another location so that even if the worst does happen, we will know.

Q. What is the benefit of Vade's Custom API?
A. Vade has put considerable effort into developing our Application Programming Interface which allows rapid development of custom websites and applications. This core functionality is also maintained by our development team so your website/application will benefit from bug fixes and sometimes extra functionality automatically.

Q. What is a spam filter?
Q. In what ways does Vade filter spam?
A. A spam filter is software that uses a number of different methods to redirect unsolicited email from a users mailbox. There are a number of techniques employed to achieve this goal from dns blacklists to checks against the senders email address to checks against the subject and content of the message itself. To do this, software automatically analyses the incoming messages and scores them based on their likeness to previous "spam" messages that have entered the system.

Vade's first line of defence is in using public dns blacklists to stop known spammers from getting mail into the system. This method is employed by the majority of email systems across the internet and has been shown to reduce the amount of spam by very high amounts.

After passing the blacklist, new servers are greylisted for a period of five minutes. After this period has passed, this server is free to retry and send the mail again. If it does and the mail goes through without being classified as spam, the server becomes whitelisted meaning it will never be subject to this check again.

The message is then passed to our email antivirus scanners to be virus checked as well as have some basic content filters applied. This step removes all known viruses from incoming emails to ensure you cannot be infected. It is still good practice to allow your own antivirus to scan the messages that arrive on your machine as there is always the possibility of an unknown virus slipping through. As such, only open attachments from people you know.

Last in the process, before sending the email on to your inbox, is to analyse and score the incoming message and score it against previous messages to determine if it is spam or not. If it is, the email with get tagged as ***SPAM*** in the subject line, or if you set it up in your control panel, be redirected to a folder of your choice.

Q. What is email antivirus and what does it do?
A. Email antivirus is a program which runs similar to the antivirus on your computer. It works by scanning each incoming message and looking for viruses in or particular content patterns which are used by viruses. Upon detection of a virus, the system first tries to clean the virus from the email. If it can't do this, it will either quarantine or delete the message to keep your mailbox clean and protected.

Q. What is a blacklist?
A. Most generically, a blacklist is a list of servers or people who can't access a particular item. On the Vade systems, we use blacklists in a number of capacities. The main places is with our DNS blacklists on the email system. This contains a list of servers that have been reported to be sending out spam messages. We use a number of public lists to fulfill this function. The second place is with the email address blacklisting. This is where you add joe.bloggs@email.ext to a list to stop mail from him coming through.

Q. What is grey listing?
A. GreyListing is a process where email servers which have not sent email to you are blocked on their first request. After a period of five minutes, mail is then allowed through from this server on all following requests. The reason behind this is that most spammers want to send very large amounts of SPAM messages and can not afford to wait the five minutes it would take to retry.

Q. What is webmail?
A. Webmail is an application that allows you to access your mailbox, send and receive email, and manage your mailbox all from within a standard web browser. The huge benefit to this is you can access it from anywhere in the world once you have a web browser such as Microsoft Internet Explorer or Mozilla Firefox and an internet connection. With your Vade account, you will have access to three different webmail clients.

Q. What are name servers?
A. Name servers are applications on the servers which map to an address that gives your computer directions to the location of your website.

Q. What does Bandwidth / Transfer Allowance actually mean?
A. Your transfer allowance is the amount of data your site can transfer to the internet in any given month.

To give you some real world figures, the average web page size (including images) is around 100K in size, or 0.1M. With your transfer allow of 50G on the Primus Web Hosting package, your visitors could look at this page around 500 000 times. For your whole site, the numbers only go up because browsers are smart and cache images meaning further page views are even smaller. In reality, the average website could probably get a few MILLION hits in a month on this figure.