I am facing a problem which might not be the right issue to post here but I can’t deny the possibility. Hence posting here anyway with a hope of getting the right insight.
I have a self hosted ERPNext instance accessible at erp.example.com.
Sometimes, I can’t access the application at all, not on computer, not on mobile device. The browser gives connection timed out error.
Strange thing is that I can access the website if I immediately switch to mobile data while the office wifi just can’t load the website (I have confirmed it is not internet connection issue/other sites are running good). The site is accessible at another location.
Sometimes, one location gets blocked while sometimes another location gets blocked. It lasts for a few minutes and then the website works fine in a while.
I am guessing this is a DNS resolving issue.
Or could it be that the server is rejecting connection from some IP ?