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Critics often claim abuse of administrative power over domain names. Particularly noteworthy was the VeriSign Site Finder system which redirected all unregistered .com and .net domains to a VeriSign webpage. For example, at a public meeting with VeriSign to air technical concerns about SiteFinder, numerous people, active in the IETF and other technical bodies, explained how they were surprised by VeriSign's changing the fundamental behavior of a major component of Internet infrastructure, not having obtained the customary consensus. SiteFinder, at first, assumed every Internet query was for a website, and it monetized queries for incorrect domain names, taking the user to VeriSign's search site. Unfortunately, other applications, such as many implementations of email, treat a lack of response to a domain name query as an indication that the domain does not exist, and that the message can be treated as undeliverable. The original VeriSign implementation broke this assumption for mail, because it would always resolve an erroneous domain name to that of SiteFinder. While VeriSign later changed SiteFinder's behaviour with regard to email, there was still widespread protest about VeriSign's action being more in its financial interest than in the interest of the Internet infrastructure component for which VeriSign was the steward.
Even businesses with dedicated on-site IT staff have seen the wisdom of moving their email service. The advantages include per-person cost averages, cutting-edge security, cheap email storage, and simple ease of connectivity and deployment. While these advantages hold true for most organizations, there are not only exceptions but also hidden "gotchas" you should look for before selecting a cloud-hosted email provider.
VPS web hosting provides more resources and security for established websites with higher traffic flows like business websites and large general interest websites that attract large visitor numbers per month. Dedicated servers are the top tier in web hosting services providing the ultimate hosting environment with top level security and resources ideal for large businesses, corporations and ecommerce websites.
Data protection is another key email security concern. Inboxes often contain GBs of business-critical and personal data, so not just hackers but also legitimate marketing companies can make big money off mining email data—and this sometimes includes the very company that is providing the email service to you. Fortunately, most companies, including your hosting provider, are pretty good about keeping out of private data, but it's important to be aware of when these policies have failed. Security breaches are commonplace and it's important to know how your data is being managed. To protect yourself, be sure to inquire about data safety capabilities on the provider's side, especially around encryption and malware scanning. But be sure to implement additional measures on your side, as well, including encryption for those using local email clients as well as deploying personal virtual private networks (VPNs) to folks accessing their email from multiple locations.
Domain names serve to identify Internet resources, such as computers, networks, and services, with a text-based label that is easier to memorize than the numerical addresses used in the Internet protocols. A domain name may represent entire collections of such resources or individual instances. Individual Internet host computers use domain names as host identifiers, also called hostnames. The term hostname is also used for the leaf labels in the domain name system, usually without further subordinate domain name space. Hostnames appear as a component in Uniform Resource Locators (URLs) for Internet resources such as web sites (e.g., en.wikipedia.org).
One of the most important compatibility factors to consider with email is the mobility question. How often do your employees need to access email via mobile devices? That's an important issue because most email hosting providers deliver some kind of web client usable as a default inbox. Almost all of these can be accessed via a mobile device, so if your employees don't need to access their emails on the road that much, then such mediocre clients are probably fine.