Hallo @Berny Thanks a lot for your reply. I have added the SMTP & POP/IMap server exclusions. That setting work because I dont get a warning message for each email that I want to send. However, I still get a warning message but at least just once if I have reboot or restart my computer. If I have accepted the warning to use this server then I can use my Outlook to send emails the whole time without getting any messages until I reboot the computer again and accept this warning message for the next session until I reboot the computer again. Do you know of a setting to get around this?