Thanks again. This worked in case anyone is looking for it:
http protocol "monit" {
match request forward to <httpd>
match request header "Host" value "status.affekt.org" forward to <monit>
}
The order is important, if put in reversed the "status.affekt.org"
forward will be overwritten.
Now all I need to investigate is why HTTP responses are erroneous,
though you might be right that it could be a Monit problem.
