I have two computers linked to the net via a wireless router. Using Mozilla Thunderbird on both I frequently get on one machine the fault report "The message could not be sent because connection to SMTP server smtp.ntworld.com timed out. Try again or contact your network administrator.
The other computer has no problems in sending mail messages.
The fault has only recently developed. Repeated attempts to send message sometimes gets through.
Any ideas?Is this a set up problem on faulty macine?