Why Kaspersky Internet Security is blocking email?

by Aana Taylor Customer Support IT Service UK

The advanced generation of Kaspersky security software is Kaspersky's internet security and it is the best security suite that will provide excellent security to your device against advanced viruses and malware. It will support for scanning of the encrypted connections that include SMTP/IMAP over SSL between the mail client and the mail servers.

Although this behavior is most likely and it might occasionally go so far. Kaspersky will interfere with your mail connections, and injects itself between the mail client and mail server, and use your own certificates to secure the “last mile” of the connectivity. It will cause your mail client to complain about the invalid certificates from the mail services. There is no need to remove Kaspersky when Kaspersky Internet Security is blocking email and even you don’t need to deactivate the scanning of encrypted connections.

Reasons Mail Service Intercept in Kaspersky Internet Security

After successful installation, Kaspersky Internet Security intercepts the login credentials that your email client will send around the network to authenticate for the use of the mail services. Having done that, Kaspersky inserts the own mail scanning servers between the mail client and the Mail Delivery Agent that is part of your mail server. Kaspersky Internet Security uses its own SSL certificates to secure the “last mile” of the connectivity and the communication taking place between the mail client and the network’s mail scanning servers.

Kaspersky is acting as the mail client towards the mail servers on one hand and because of the mail delivery agent towards the mail client on the other hand. As result, the mail client will keep complaining about certificate mismatches and connection inhaling.

Troubleshoot certificate warnings because of Kaspersky Security

You basically have two options-

1. Accept Kaspersky’s SSL Certificate as valid by including the certificate to the exceptions list in the mail client; Kaspersky will be scanning the mail on their own servers so that, you can take benefit of the fill functionality scope of the Kaspersky Security software without any restrictions.
2. Deactivate Kaspersky’s Checking Activity by including your mail host to the exclusion list of Kaspersky, your mail client will communicate with the mail server without intermediaries so that whatever scanning Kaspersky wants to conduct on the mail, can take place on the local PC.

Deactivate Mail Intercept in Kaspersky Security

To deactivate the mail intercept in Kaspersky internet security, you will need to follow the steps given below-

Modify Security Settings in Kaspersky Security

You will need to start the Kaspersky Internet Security you have to click on the Settings icon that appears at the bottom of the application window.

Edit Network Settings

In the section additional of the Settings window, you have to click on Network. Scroll down to the section “Encrypted connections scanning”, you have to activate “Always Scan Encrypted Connections” and click on “Manage Exclusions”

Manage Exclusions

In the following dialog, you have to click on the Add. Enter the hostname as it appears in the certificate details section appears under Common Name. You have to set the status to “Active” and confirm. Now, return to the Network Ports dialog that is still open and make sure to keep the option enabled which says “Monitor all network ports for applications which are vulnerable to the network attacks”. Confirm by closing the window and then, click on Done to finish the step.

Here you are all done with the steps to block email because of Kaspersky antivirus. In case, if you want to know more or want some additional information regarding Kaspersky then, calling Kaspersky Customer Care Contact Number UK will be the best choice as you can get all the resolutions here.

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