I've got a client who's having issues with his Outlook mail.
Office 2007, Win7 x64, Security Essentials running along with SUPER Anti-Spyware and Malwarebytes.
We've run the WinsockXP Fix just in case and he's still getting this error on send.
Receiving works fine.
Email is a domain hosted through Telecom using their Officemail servers.
It works fine on his laptop, so we know the settings are all correct, nothings changed since yesterday afternoon when it was working.
Any ideas on how to resolve the 0x800CC0F error?
We've even fully deleted then re-added the mail account with no joy :-/