I've been signed up with Sky's broadband package for several months now and have been using Outlook 2000 to send and receive emails from my doctors.net.uk POP3 email account.
Strangely, two days ago I suddenly became unable to send emails and instead get the following error message:
"The message could not be sent because one of the recipients was rejected by the mail server. Server response: "550 settings". (Account: 'mail1.doctors.org.uk. SMTP server: 'smtp.sky.com', error number: 0x800ccc79)."
I've done a bit of Googling on the error number and have tried changing my Outgoing mail server port numbers but to no avail.
Most of the other answers I found through Google seemed to be addressed to people who'd had this sort of problem from day one, rather than having it suddenly develop, as seems to have happened to me.
I know I should probably try ringing Sky's helpline in the first instance but previous experience suggests that it might be less frustrating to ask here first... Any help would be much appreciated.