305765 - The junk filters should be sensitive to empty E-mails

Status: UNCONFIRMED

(MailNews Core :: Filters, enhancement)

Description

[Neil Harris]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20050716 Firefox/1.0.6
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20050716 Firefox/1.0.6

I get lots of spams with no content at all, just whitespace. None of these are
from people I know, and are presumbly attempts to confirm the presence of a
valid E-mail account by checking for bounces.

Reproducible: Always

Steps to Reproduce:
1. Get mail
2.
3.

Actual Results:  
I got a significant number of blank E-mails from spammers.

Expected Results:  
Noted the absence of either non-whitespace text or an attachment, and combined
this with other information in its Bayesian filter to mark them as junk.


It's remarkable how many E-mails this catches: only a small part of my overall
inbox, but they are *all* spam.

Comment 1

[Tuukka Tolvanen (sp3000)]

did you check if thunderbird persists in not detecting such messages as junk
after training on a few such messages?