Since I transferred Norton Internet Security 2005 from my old PC to my new one about a week ago, more than half of the emails I have tried to send have failed with a Norton error message stating ‘Your email message to (name) with the subject (subject) was unable to be sent because the connection to your mail server was interrupted. Please open your email cliend and re-send the message from the Sent Messages folder (1003,9)’ I have no problem receiving emails. I have no problem sending emails if I disable Norton Internet Security entirely. On my old PC I have Windows 2000 sp2 and Office 2000, and it still works fine. (For the time being I have not uninstalled Norton Internet Security 2005 on my old PC so that I can compare settings on my old and new PCs, though it is now overdue for an update). The old and new PCs sit side by side for the time being so that I can compare them. On my new PC I have Windows XP sp2 and Office XP sp3. I use the same 56kbps dial-up line and the same ISP and email account on both old and new PCs. I have consulted Symantec’s web site and Google and so far have tried the following suggestions: 1. I have tried waiting. In the meantime I have sent and received messages on my old PC to prove that this still works. 2. I have tried setting Outlook XP not to hang up after sending or receiving. 3. The only firewalls I have are Norton Internet Security 2005 and the Windows XP firewall. The Windows XP firewall is switched off. 4. The Norton firewall has access to ccApp.exe as suggested by Symanted 5. Symantec says to give the firewall accett to Symnetdrv.dll but it does does not exist on my PC. 6. There are two copies of Ccemlpxy.dll. I gave the firewall full access to both. 7. Outlook.exe has full internet access 8. Disabling outgoing email scanning 9. Disabling incoming as well as outgoing email scanning 10. Disabling all email scanning and disabling the Norton firewall. 11. Increasing the server timeout setting in Outlook from 30 seconds to 10 minutes 12. Switching off spam filtering in Norton 13. Checking that timeout protection in Norton is set 14. Installing MS Office SP 3 15. Added my email server www.onetel.net.uk to the firewall’s trusted zones 16. Ran Live Update 17. Added ports 25 and 110 to the XP firewall, even though it is switched off. 18. Checked that the email settings are the same as on my old PC 19. Installed Outlook 2000 but it would not send even without Norton. Error 0x80070057. Could not see Outlook Express? Uninstalled it again. When I say none of the above worked, what I mean is that the two test emails I have been sending again and again worked some of the time with most of them, but when I sent them again with the same settings to confirm, they failed. Sending seems more likely to succeed if there are incoming emails, or if the email being sent is just a few words. Help!