POP3 Email - Send Function Error

[PoPoDomains]

I recently upgraded to Plesk 8.4 and now am unable to send emails through Outlook. I can receive but when sending I receive the following error:

Socket Error: 10061 , Port: 25, Protocol: SMTP.No connection could be made because the target machine actively refused it.

Any suggestions on how to fix this? Thanks. John

 

[PoPoDomains]

POP3 SMTP error solved

The error has been solved. Apparently Cox cable blocks port 25 which makes it impossible to send emails via SMTP. I contacted Cox and they solved the problem. I thought the problem was at the server level but I was wrong. It was originating from my residence.