That is obviously not the case.
I am the only user in the system and I have installed ERPNext in my own CentOS system.
Having a validated quotation in ERPNext system, I send it by e-mail. When received the e-mail, the PDF file is attached.
The body of the e-mail has a link to view the quotation in browser. I click the link and a resource not found error is shown.
The link in browser is: https://erp.server.com/Quotation/QUO19/0058?format=Standard&key=29bbdd9c0cfcab906c699f12e8f8169c43c0d3d76c00ae8cbb2c7d33
By comparing this to the link when I see the quotation in ERPNext system, this is it:
If I add “desk#Form” part in the link that comes in the e-mail, a not authorized error is shown.
That is why I reported this to be a bug. The problem is not that obvious such as “the quotation might be deleted by someone”.
I need to fix this before I send the quotation to my customer.