Split from this thread.

What happens when you try to send?

When the program is unable to send or receive, it will almost always display an error message explaining what went wrong. Remove any unsent messages from the outbox (below the account folders in the folder pane), then compose a new test message with a unique subject and send it to yourself (i.e. from the account that's misbehaving to the same account). Post any error messages in your reply. You can click on an error message to select it, then use right-click to copy it and paste it into the text entry box.

When you reply, please give your build of the program and your version of Windows.
 

• To find your program version and build, in Windows Live Mail press Alt-F B.
   
• To find your operating system, press Windows key + R, type winver into the box and press Enter.

Hi Firedog,

Windows  Live Mail Ver.2012 Build 16.4 3528.0331

Windows 7 Home Premium.

Have altered In/Out  numbers 465/995 and 993 respectively, but no joy

The connection to the server has failed.
Subject 'Testing '
Server: 'smtp.tiscali.co.uk'
Windows Live Mail Error ID: 0x800CCC0E

Protocol: SMTP
Port: 993
Secure(SSL): Yes
Socket Error: 10060