Verification fails

[jozeph]

Version: 2008
Operating System: Mac OS X 10.5 (Leopard)
Processor: Intel
Email Client: pop

Suddenly Entourage won't send email anymore. I get the following error messsage:
Verification fails becaurse Entourage doesn't support available verification methods. Error 17897

 

[jozeph]

I solved the problem. somehow verification outgoing e-mail was activated.