Blocking Delivery Status Notifications?

Remco Barendse mailscanner at BARENDSE.TO
Tue Oct 15 14:33:23 IST 2002

Was thinking to put several phrases / bits of text from udesireable /
unwanted DSN e-mail replies into strings that we could put in a config
file. Then have mailscanner check every e-mail for these strings and
silently drop every e-mail with that text in it if the mail originates
from the domains in our localdomains list (like MS can do with

To put it simple : check every e-mail for text lines that would appear in
DSN reply messages from our local domain and silently drop them?

This way 'good' DSN replies would be allowed through as well as incoming
DSN messages for failed e-mail messages but sensitive / private
information and replies spammers would like to have would be blocked.

On Tue, 15 Oct 2002, Julian Field wrote:

> At 12:33 15/10/2002, you wrote:
> >Would it be possible to make the text of these DSN messages a string that
> >can be included sort of in a 'virus messages to be silently dropped' way
> >if it isn't possible to mess about with the DSN status in the
> >message headers?
> >This way (in this case Exchange) would still generate these 3 types DSN's
> >but they would never get delivered :)
> Not quite sure what you mean. Can you give an example or two?
> --
> Julian Field                Teaching Systems Manager
> jkf at         Dept. of Electronics & Computer Science
> Tel. 023 8059 2817          University of Southampton
>                              Southampton SO17 1BJ

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