How does managed email security service?
These services intercept emails sent to your domain, and filtered them before they reach the server. This protects the network from dangerous applications for letters, spam and other unwanted content. Program can analyze images even in letters based on your settings. Most services allow you to configure filtering to prevent erroneous results. As in the case of filtering software installed on the site, you have the ability to create blacklists and / or white lists to unwanted messages do not fall into your system, and regular messages were not detained filters.
Disadvantages of using a managed email security services
Information technology specialists are concerned, oddly enough, the safe use of managed email security services. E-mail messages must pass through the hands of strangers before they go to the end user. Messages are read, sometimes diverted removed, altered, their contents disclosed by unknown persons.