Can’t send emails from my WLive Mail

Hi.

Until yesterday, my emails were working fine. Then all of a sudden, I couldn't send. I am receiving emails, no problem, but sending is a problem. Messages are just sitting in my outbox.

Error message reads as follows:

Unable to send or receive messages for the LEDGER OFFICE account. The connection to the server has failed.

Server: 'mail.ledgersystems.co.za'
Windows Live Mail Error ID: 0x800CCC0E
Protocol: POP3
Port: 110
Secure(SSL): No
Socket Error: 10060

Can someone please assist me with this problem?

Thank you