The address is http://184.108.40.206/viewtopic.php?f=7&t=12131.... etc.
It resolves to
IP Address : 220.127.116.11
Location : Netherlands (95% accuracy)
Host Name : tartini.debian.net
whereas debian.net is
Host Name : debian.net
IP Address : 18.104.22.168 and 22.214.171.124 and 126.96.36.199 and 188.8.131.52 and 184.108.40.206
Location : United States
I guess it's just a mirror but just wondering why it doesn't resolve the IP address. Another topic notification email I got at the same time resolved normally.