Thanks Bruce and PA Bear.

Bruce, I found the info you've pointed to before I posted but it doesn't help.

PA Bear, I've just set this up for a very elderly lady who has just signed
up with PlusNet. She tells me that email from her previous provider did work.
I've tried deleting the account from OE and then setting it up again but this
didn't resolve the problem. The problem only occurs when a message is waiting
to be sent, if there is nothing in the Outbox the Send/Receive goes through
OK.

"PA Bear" wrote:

Is this a sudden, new problem or an ongoing one? IOW, have you /ever/ been
able to send mail from this mail account before?
--
~Robear Dyer (PA Bear)
MS MVP-Windows (IE, OE, Security, Shell/User)
AumHa VSOP & Admin; DTS-L.org

Dell Boy wrote:
I'm getting the following error when I try to send email:

"An uknown error has occurred. Subject 'Test Message', Account 'My Email',
Server 'relay.plus.net', Protocol SMTP, Port 25, Secure (SSL) No, Error
Number 0x800CCC08"

Could anyone advise how to progress resolving it?