Returning Details about Spam Evaluation when Rejecting Spam

[Дилян Палаузов]

Hello,
When an email is evaluated as spam and in turn is rejected during the 
SMTP dialog, is it reasonable to show in the SMTP response the result of 
the spam evaluation or not?

E.g. Using SpamAssassin to filter the messages, what response is better 
and why?

550 5.7.1 Your mail was evaluated as spam.

or

550-5.7.1 Your mail was evaluated as spam (see below for details).
550-5.7.1
550-5.7.1 -0.0 SPF_PASS SPF: sender matches SPF record
550-5.7.1 -2.6 BAYES_00 BODY: Bayesian spam probability is 0 to 1%
550-5.7.1 [score: 0.0000]
550 5.7.1 1.0 DKIM_VALID DKIM_VALID


Thanks in advance for your opinion,
  Дилян