"Greetings" -- sendmail block

Julian Field mailscanner at ecs.soton.ac.uk
Fri Nov 1 09:12:47 GMT 2002


At 08:35 01/11/2002, you wrote:
>Is blocking these kinds of messages on the todo list of features to come

Yes, eventually. I still need some more examples of all the status message
Exchange can produce (in English) so I can work out a robust way of
spotting which ones I want to delete.

>On Wed, 30 Oct 2002, Julian Field wrote:
>
> > At 08:43 30/10/2002, you wrote:
> > >Would this also work for blocking the Delivery Status Notifications like
> > >Read Receipt and similar messages?
> >
> > Probably, yes.
> >
> > >Or would this start a war between the linux mail gateway and the exchange
> > >server resulting in tons of messages bouncing back and forth?
> >
> > You can send them to $#discard rather than $#error which, if I remember
> > rightly, will silently throw them away.
> >
> >
> > >On Fri, 25 Oct 2002, Julian Field wrote:
> > >
> > > > In case you want to block this with sendmail, so that it never gets
> in to
> > > > your site in the first place, this will do the job in your sendmail.cf
> > > file:
> > > >
> > > > HSubject: $>Check_Subject
> > > > D{FriendPat}you have an E-Card from
> > > > D{FriendMsg}This message is probably a nasty E-Card.
> > > > SCheck_Subject
> > > > R$* ${FriendPat} $*             $#error $@ 5.7.1 $: ${FriendMsg}
> > > >
> > > > Remember that the whitespace before "$#error" has to be tabs and not
> > > spaces.
> > > >
> > > > If you want to expand the list of subjects, just make more pairs of "D"
> > > > lines to set the patterns and messages, and add a new R line for
> each one.
> > > >
> > > > At 17:18 25/10/2002, you wrote:
> > > > >At 17:06 25/10/2002, you wrote:
> > > > >>On Fri, 25 Oct 2002, Julian Field wrote:
> > > > >> > Would people prefer
> > > > >> > 1) Replace the content of messages containing "nasty" headers
> such as
> > > > >> this,
> > > > >> > as if it was a virus
> > > > >> > 2) Just flag is as spam and handle according to the normal "Spam
> > > Actions"
> > > > >> > ?
> > > > >> >
> > > > >> > I'm writing (1) at the moment, but it just occurred to me that (2)
> > > > >> might be
> > > > >> > better.
> > > > >> >
> > > > >> > Your votes please...
> > > > >>
> > > > >>This is mere speculation and may be impractical, but...
> > > > >>
> > > > >>How about making the behaviour (currently a proposed two-list of
> > > > >>"virus-like" or "spam-like") somehow selectable by the sys.admin.??
> > > > >
> > > > >How did I know that someone was about to say that...
> > > > >:-)
> > > > >
> > > > >I'm going to go with the SpamAssassin solution for now, it means
> less work
> > > > >for me and I've had a long week. More brandy needed....
> > > > >--
> > > > >Julian Field                Teaching Systems Manager
> > > > >jkf at ecs.soton.ac.uk         Dept. of Electronics & Computer Science
> > > > >Tel. 023 8059 2817          University of Southampton
> > > > >                             Southampton SO17 1BJ
> > > >
> > > > --
> > > > Julian Field                Teaching Systems Manager
> > > > jkf at ecs.soton.ac.uk         Dept. of Electronics & Computer Science
> > > > Tel. 023 8059 2817          University of Southampton
> > > >                              Southampton SO17 1BJ
> > > >
> > > >
> > >
> > >
> > >--
> > >This message has been scanned for viruses and
> > >dangerous content by MailScanner, and is
> > >believed to be clean.
> >
> > --
> > Julian Field                Teaching Systems Manager
> > jkf at ecs.soton.ac.uk         Dept. of Electronics & Computer Science
> > Tel. 023 8059 2817          University of Southampton
> >                              Southampton SO17 1BJ
> >
> >
>
>
>--
>This message has been scanned for viruses and
>dangerous content by MailScanner, and is
>believed to be clean.

--
Julian Field                Teaching Systems Manager
jkf at ecs.soton.ac.uk         Dept. of Electronics & Computer Science
Tel. 023 8059 2817          University of Southampton
                             Southampton SO17 1BJ



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