Periodically emails will be received, but 99% of the time, they are not. Emails show up in Sent folder and no error messages are being received. This happens in Outlook 2002 and OE6 running WinXP. This is a GoDaddy pop email account with outgoing authentication using port 80. RoadRunner is ISP. Steps I have taken: Using GoDaddy webmail, recipients receive my emails so GoDaddy says it is not their outgoing mail server. Replied to a GoDaddy support email using Outlook and they received, but next email sent to 3 people never received. Tried with new message and replying. Using test account settings in Outlook states sending and receiving okay. Configured a Road Runner email account in Outlook and sent emails were received. Also, have another email account configured in OE6 and it works fine. Have turned off Norton email scanner. Also used msconfig startup and removed all Symantec (Norton, Ghost, Systemworks) entries along with CA Spam & Spyware programs. Turned off WinXp firewall. Change in last 3 weeks was install of I-Tunes, so I uninstalled. Checking to see if there were any MS Updates installed. Any suggestions would be greatly appreciated - this one has me completely stumped.