Tried and tried using my Yahoo account with the webform. Error every time:

Sorry, SpamCop has encountered errors:

Confirmation codes do not match:

...

But when I did the FORWARD AS ATTACHMENT it worked ok!

Moderator Edit: extracted from http://forum.spamcop.net/forums/index.php?showtopic=4602 and made into it's own Topic

Thanks for the feedback and suggested solution ... just noting that there is probably some configuration of the Yahoo account that needs to be done also .... I recall doing up a FAQ entry on "How to submit from Yahoo" that required actually configuring the content and format of the "Forward action" ....