When I open Mail I receive a pop up - "Insecure update error! For security reasons, you need to sign your updates with a DSA key. See Sparkle's documentation for more information". I believe this is the result of me adding a new Plugin to Mail. I like the Plugin. How do I permanently remove this error message? I searched for information about Sparkle and I don't it is something I need, or want.
Contact the maker of that Plugin to ask if there's an update coming. Only (s)he can solve this for you.
Contact the maker of that Plugin to ask if there's an update coming. Only (s)he can solve this for you.
Sparkle is a software library used by many application developers as a means of distributing updates to their applications automatically over the Internet. However recently some security vulnerabilities where discovered in older versions of Sparkle.
See https://sparkle-project.org/documentation/security/
Some corporates IT departments may have taken steps to block/disable Sparkle as a brute-force means of 'fixing' this security issue.
Rather than relying on the vulnerable version of Sparkle to update your application or in this case plugin with presumably also a new fixed version of Sparkle you should check on the authors website and manually download and install a new fixed version.
Insecure update error! DSA key. Sparkle
