Also error it's the same if you do a wget --spider domain:
Spider mode enabled. Check if remote file exists.
--2011-06-30 16:28:35--
http://maildomain:/
Connecting to 10.10.0.203:80... connected.
HTTP request sent, awaiting response... 500 Internal Server Error
--2011-06-30 16:28:39-- (try: 2)
http://10.10.0.203/
Connecting to 10.10.0.203:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/html]
Saving to: `index.html.2'
[ <=> ] 10,585 --.-K/s in 0.003s
2011-06-30 16:28:39 (4.03 MB/s) - `index.html.2' saved [10585]