I am getting the following error while publishing any page in Tridion.
Transport failed: Could not transport tcm_0-2421110-66560.Content.zip using HTTPS, cause: Internal Server Error
My pages are very small in size, so I don't expect this to be an issue with memory size. But when I restart the IIS server, publishing works again, however after some time it stops working and gives the same error.
Does anybody know what I can do to solve this?