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