Unable to send due to java.net.SocketTimeoutException

Unable to send due to java.net.SocketTimeoutException

Hi.. Getting the following error when trying to test email config:
 
Unable to send due to java.net.SocketTimeoutException
 
Have tried a number of POP3 and SMTP options/accounts.
 
Any ideas?
Clive

                New to ADSelfService Plus?