Unfit to send messages in Microsoft Outlook is one of the normal Microsoft Outlook issues. It might happen because of various reasons viz. wrong Microsoft Outlook arrangement, erroneous worker settings, late changes made to Outlook, and antivirus/firewall settings among others. Along these lines, we should limit to the changes that can really fix this Microsoft Outlook issue. The beneath referenced Microsoft Outlook support guide contains various changes that will assist you with fixing this issue. Ensure that you adhere to the guidelines referenced in the aide cautiously to try not to deal with issues.

Open Outlook and explore to Tools tab and afterward Account Settings. When in the Account Settings window, you will see your email profile recorded under the E-mail tab. Snap once on your profile and afterward hit the Change button. When in the Change E-mail Account window, hit the More Settings button. Feature the Advanced tab in the following window. Check the worker port numbers for approaching and active mail worker. Snap to choose the container alongside This worker requires an encoded association SSL underneath the Incoming worker POP3 box.

e-mail sending

Select Auto starting from the drop bolt next to Use the accompanying kind of scrambled association underneath the Outgoing Server SMTP box. Check different settings whenever required. Something else, click the OK catch to save the progressions and close the window. Hit the Next catch and afterward the Finish catch to leave the Change E-mail Account window. Close Outlook and return it. Return by making and sending a test mail. The email should go through fine.

In the event that the previously mentioned technique does not work for you, attempt this change. In Outlook, click the Tools tab and select Options. When in Options, click the Mail Setup tab and hit the Send/Receive button thereafter. When in the Send/Receive Group exchange box, click the Edit button. Snap the Account Properties button a while later and check webmail kpn. When in the Properties window, click the Outgoing Server tab. select the catch close to Log on to approaching mail worker prior to sending letters. Hit the OK catch and afterward OK, Close, Close, and OK to save the changes. You should follow every one of these or other comparative prompts that you see on your screen to save the changes. At the point when done, close and return Outlook. Make and send a test mail. It ought to go through with no issue. Browse the email design in your antivirus program. On the off chance that you are utilizing an antivirus that has an email filtering highlight, it might meddle with your Outlook program and keep it from sending or getting messages or lead to other Microsoft Outlook issues.