Unable to Send Email

[vbfischer]

I am unable to send email. I can receive email, but Thunderbird times out with the following message:

"Sending of message failed.

The message could not be sent because connecting to SMTP server <domain> failed. The server may be unavailable or is refusing SMTP connections. Please verify that your SMTP server setting is correct or try again, or else contact your network administrator"

I have tried looking in the log at /usr/local/psa/var/log/maillog but its not logging anything when I send mail. Is this the correct log? Is there a way to generate any more logging info?

Thanks