evolution - junk

[Norman Silverstone]

I have used Evolution for several years and, until today, never had mail
in the junk folder. Now, some of the mail which should be going into my
ubuntu-users list folder is ending up in the junk folder whilst other
mail goes into the correct folder. The odd thing is that mail in the
same thread is appearing in either folder.

Is anyone able to suggestion a solution to this problem, please.

Norman