When I try to send a mail from my network, I get these mails back after a few days...
Hi. This is the qmail-send program at <domain.org>.
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.
<xxx.xxx@hotmail.com>:
CNAME lookup failed temporarily. (#4.4.3)
I'm not going to try again; this message has been in the queue too long.
I changed my server from gateway to server-only. Everything else works.
It seems like a DNS problem, but I cant find anything...