How many domains do you have on your server? Is it just one, or is it several? It looks like the issue is just with this particular domain – Virtualmin can’t find the Apache config for it, and it’s throwing this error:
Yes the website is working fine. Even local file system backups are working fine even tho they are giving the same no Apache virtual host found! error.
Few weeks back I had modified the ports to something other than 80 by editing the global Apache config (httpd.conf) because I started using varnish cache.
Does no Apache virtual host found! sound like a parsing bug/error?
Its strange because local file-system backup is working but Amazon S3 backup wont work.
If there is any way to debug this, please let me know.
Found a solution.
The solution was to change the server’s IP from the virtual min settings.
Server Configuration > Change IP Settings and changed the port from there.
This fixed the error about no Apache virtual host found! and the S3 Backups worked.