Dan <rabies2000@hotmail.com> wrote:
> 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)?

Sending myself mails with
/usr/lib/sendmail -d strube
From: .....

test
..

I found out that the corruption occurs _after_ spooling (no corruption
visible in the debug output). The essential point is the occurrence of
a ':' in the "From:" line, not the "{...}". E.g., try
From: <xx@domain> aa:bb
This yields "<xx@domain> aa":xx@domain

--

Hans Werner Strube strube(@)physik3(.)gwdg(.)de
Drittes Physikalisches Institut, Univ. Goettingen
Friedrich-Hund-Platz 1, 37077 Goettingen, Germany