Another can't send email post, pls help

[Guest]

Subject 'test', Account: 'pop.east.cox.net', Server: 'smtp.east.cox.net',
Protocol: SMTP, Server Response: '250 OK', Port: 25, Secure(SSL): Yes, Server
Error: 250, Error Number: 0x800CCC7D

Above is the message I get.
Thanks,

 

[Cor Ligthert[MVP]]

Far most probably your virus checker who has blocked port 25.

Cor