I am using a Mac G4, OS X 10.4.2, although this issue goes back to the days of 10.3 without resolution.
When I switched from Sp@mX 4.1.7 to 4.2.2, I started getting the message, "error locating SMTP server ..." and my SMTP server's name, every time Sp@mX processed any spam. For that reason, I continued to use 4.1.7, which does not give me this problem.
Tried 4.2.5, same thing happens. I'd like to upgrade, but I do not have time to mess with an application that is constantly giving me error messages to dismiss.
If memory serves, I complained of this issue when 4.2.2 came out, but no joy.
Spam-fighting is not a hobby for me; I do not have time to tinker. If anybody knows why this would happen, please advise.