I'm guessing that no one can fix this problem! Since none of the forum feedback I've found so far has helped. The error statement is seen in Outlook 2007 when I sent an email via POP3 account:
Task 'email address' - Sending' reported error (0x800CCC69) : 'The server responded: 550 IP address 86.176.168.5 in XBL'
The login details for the mail server are spot on. I've also checked all my other POP3 accounts and they all suffer the same problem.
The accounts have worked fine for several months. The only change has been the use of vodaphone mobile broadband. I installed it after my BT connection had trouble last week and ever since this problem has existing. My problem is definately linked to this since I also had the same problem 6 months ago and had to reinstall everything.
I'm coming close to a reinstalation of Microsoft Office and the loss of all existing emails. Please help if you can?
