Cannot send e-mail to the domain

[denpetrov]

I am not sure what is going on I can not send e-mail to my work server which is running exchange and it is only server that I cannot send e-mail as far as I can tell. message that I get:     Hi. This is the qmail-send program at gss.chernobyl.com. I'm afraid I wasn't able to deliver your message to the following addresses. This is a permanent error; I've given up. Sorry it didn't work out. <[EMAIL PROTECTED]>: Connected to 216.133.8.9 but connection died. (#4.4.2) I'm not going to try again; this message has been in the queue too long. In addition qmail is sitting behind firewall with one static route to the firewall. May be it just timing out? Once it went through and that is it. Thankyou for your help Denis