Comment Re:MTA should bounce body free emails (Score 1) 167
Most email is accepted or bounced before the message body is available to the receiving ISP. By that point it's too late - the ISP has accepted the email, and the spammer will assume that it's a correct address.
Aside from which, bouncing email on that basis is against the relevant standards; and many users want to be able to receive such email - many messages are sent solely with a Subject: line and no message text.
