SonicWALL Email Security too slippery through virus Hosted.

We have supported and implemented SW Hosted Email about 2 months ago. Overall we are satisfied with the service, because it takes a huge load on our Exchange Server in the House and our security gateway server.

Shortly after starting to use the service, we had an email with an attached slip infected through and fortunately was spotted by our gateway e-mail server which we left in place for additional checking our email before moving to Exchange server. Windows 7 gateway server runs ALT - N Security Gateway and also Kaspersky Internet Security running. The infected mail was arrested by Kaspersky, being passed to the Exchange Server. I opened a ticket support and after some back and forth with the support of more than a week, you try to download the infected message they finally concluded that the message was indeed infected.

Since then, I have had at least a dozen of infected emails more pass thru not detected, but chosen by our Kaspersky Internet Security.

Our license clearly indicates that we have all services protection antiviruss like Kaspersky, McAfee and Achi. Then I don't understand how these messages/viruses can slip through?

This worries me and certainly is not pushed my confidence in the capabilities of protection the product hosted Email antiviruss.

I think that the servers and software at Dell are superior to our simple installation of Windows 7 running Kaspersky Internet Security.

What can be done to stop viruses and Trojans to get thru?

Thank you

Thanks for the comments.

Almost all anti-virus companies have had problems with the exact things you mentioned.

You should see a dramatic decrease in what you see in hosted viruses are concerned.

There was a huge Botnet that was taken down a little more than a week who was mainly responsible for these.

The problem with these is that each campaign they would send the sum of message control and attachments as well as the encryption used on the attachment in order to hide its contents change with each 3 sends e-mails.

In most cases the change in attachment occur about every 1 minutes.

Achi has made some changes to monitor their food and add update definitions that would include new decryption algorithms.

Because each antivirus provider push us their updates at different times, in many cases attachment and the payload had already changed by the only good signature for messages that have already passed.

Here's what happens soon.

Hosted Email Security will become 8.3.0 which has a lot of new features for the fight against spam, and Virus emails.

Some new features for Kaspersky enabled 8.3 which will help with these as well as messages in URL that can lead to a contaminated site if clicked.

Once we release 8.3.0 I'll go ahead and post a copy of the release notes for you.

Tags: Dell Tech

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