Dear Tobias,
Yes, after setting ms/http_domain to 0, we tried http://<mshost>.<domain>.com:<msport>/abc in browser and it was working. This was working fine earlier also the onehttp://<mshost>:<msport>/abc is not working.
Can you kindly let us know after right clicking does it show "http://<mshost>.<domain>.com:<msport>/abc" in your system or by experience ?
Thanks for your help so far.
Regards,
