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Unable to send or receive emails after installing ESET Smart Security
If you are experiencing difficulties sending or receiving email after installing ESET Smart Security, first disable the firewall to see if it is affecting email communication. See the steps below for details:
1
Open ESET Smart Security by clicking the icon in your Windows system tray or by clicking Start → All Programs → Eset → ESET Smart Security
2
Switch to Advanced Mode by clicking Toggle Advanced mode in the lower left corner of the main window, or by pressing CTRL + M on your keyboard.
3
In the left column, click Setup → Personal Firewall → Disable filtering: allow all traffic.
Fig. 1-1

The Firewall is now disabled. Check to see if email can be successfully sent and received.
If the issue is not resolved, the firewall is not the problem. Please verify that:
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You have an active Internet connection
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You can send/receive e-mails when accessing your account directly through the website. (ex: http://www.hotmail.com/)
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Microsoft Outlook has been configured correctly to retrieve your e-mail
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No other firewall is currently installed
Modifying Personal Firewall Settings
If disabling the firewall resolves the issue, adjustments need to be made to the firewall rules or the rules need to be returned to default. Follow the steps below to adjust the firewall settings.
1
Open ESET Smart Security.
2. While in Advanced mode, click Setup → Personal firewall and then click Advanced Personal firewall setup... at the bottom of the main page (See Fig. 1-2 below).

Fig. 1-2
NOTE: To Return Personal Firewall Settings To Default, skip to 1 of that section. Otherwise, continue with step 3 immediately below.
3. Select Interactive mode from the Filtering mode drop-down menu.
4. In the left column under Personal firewall, click Rules and Zones.
5. In the Zone and rule editor section, click the Setup button (See Fig. 1-4 below).
Fig. 1-3

6. The Zone and rule setup window will appear. Under the Rules tab, edit or delete existing rules to resolve the communication issue. Use the Edit or Delete buttons at the bottom of the window to accomplish this (See Fig. 1-4 below).

Fig. 1-4
For more information on firewall rules and configuration, please refer to our online documentation. If adjusting the settings does not allow you to successfully send/receive email, try returning the firewall configuration back to default settings. See the steps below.
Return Personal Firewall Settings To Default
Starting after step 2 of the "Modifying Personal Firewall Settings" instructions above, follow the steps below:
1
Click the Default button at the bottom-right corner of the ESET Smart Security Setup window.
2
The Default Settings window will appear. Select the Revert only "Personal firewall" settings to defaults option, and click Yes (See Fig. 1-8 below). Click OK to return to the ESET Smart Security main window.

Fig. 1-5
Related NOD32 FAQ Category:
Business Edition/ESET Smart Security
Related NOD32 FAQs:
Best Form of Protection is Prevention Does ESET Smart Security scan SSL (Secure Sockets Layer) traffic? Push Installation Errors An Error loading NOD32 scanner message is displayed during installation. What's wrong? How do I access log files and submit them for analysis? How do I remove/configure Scheduled Tasks On My Workstations through ESET Smart Security Remote Administrator? Why am I told that the Virus signature database update failed? Installing ESET Smart Security Installation in test mode (creating nsetup file) What does that GLE error code mean? What is Anti-Stealth? Can I change how often ESET Smart Security attempts to update? How do I RE-install ESET Smart Security? How do I remove the notification tags that are appended to my e-mail? How to recognize spam Setting up a scheduled scan in ESET Smart Security Adding/Editing/Deleting a Whitelist entry Do I want the 32 bit version or the 64 bit version? How to exclude certain files/folders from ESET Smart Security On-Demand Scanner How do I enable all of the capabilities within the ESET Smart Security On-Demand scanner? Upgrading from 2.7 to ESET Smart Security After installation, my computer locks up. It freezes on startup. What happened? (Norton Symantec error) How to restrict access to specific websites How do I know ESET Smart Security is updating correctly? Why am I constantly being prompted for my username and password? Email, Spamming, Hoaxes, Phishing An Error loading NOD32 scanner message is displayed during installation. What's wrong? What is the ESET Smart Security Antispam Module?
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