Did some more research on this. I believe (but i am far from sure) that
the rule "HdrFromSMTP" might be somehow involved. At least i see no
other rule supposed to touch the headers in my test setup. Or rather
MasqSMTP/MasqHdr. But again, i am not sure.

Any sendmail guru out there that can shedding some light over
this? A pointer in the right direction would be of great . I
believe these { } are not really supposed to be in the From: header and
therefore some rule rewrites them improperly.

thanks ahead of time
/Dan



rabies2000@hotmail.com wrote:
> Hi,
>
> same thing here. Using Sendmail 8.13.8 compiled from source under
> Linux, have reproduced on a test machine with basically only a
> SMART_HOST in the config file.
>
> Tried to set up a local rule, catching the { and } characters in the
> From: header but failed miserably. I lack the knowledge, as far as i
> can tell, the { and } are handled like <, ", and so on (not sure how i
> would go about catching these in a local rule).
>
> My intention was to reject mails with these characters - but my rule
> isn't working....
>
> My main problem with these is that the changed header seriously breaks
> the backend system :-(
>
> Anyone have any ideas where one would look for more information about
> this?
>
> kind regards,
> /Dan
>
> Hans Werner Strube, strube&physik3*gwdg*de wrote:
> > We got mails (in this case, always spam) with a From: header line of
> > the strange form
> > "some name" <user@domain>{SET:debug=11}
> > Sendmail does not preserve the form of this header but changes it into
> > "\"some name\" <user@domain>{set:"user@domain
> > I could not see from sendmail.cf where this happens and could not
> > reproduce this using /usr/lib/sendmail -bt by any rule. But I could
> > reproduce the behaviour by sending myself mails with faked From: header
> > lines of this form.
> > Is such a From: line meaningful in any way? If yes, what does it mean?
> > Why is it corrupted by sendmail (version 8.11.7+Sun)?
> >
> > --
> >
> > Hans Werner Strube strube(@)physik3(.)gwdg(.)de
> > Drittes Physikalisches Institut, Univ. Goettingen
> > Friedrich-Hund-Platz 1, 37077 Goettingen, Germany