Raphael Manfredi wrote:
>Quoting Christophe Wolfhugel:
>> Stephen R. van den Berg said:
>> |- Add Precedence: bulk
>>
>> Correct me if I'm wrong: bulk will not generate error messages
>> (bounce, user unknown, etc..) ?
>There is nothing mentionned in the Sendmail Operation Guide. The Precedence
>field is used to compute the priority in the queue. A special low low priority
>may be set by adding in sendmail.cf something like:
> Pbulk=-1000
>I think some site do not bounce back the whole message tagged with a bulk
>precedence, but only extract the header. You should still get error messages
>though, or it's a design flaw (since NOT getting something back usually means
>it arrived correctly).
Not quite. The sendmail manual I have says that the Precedence value is used
for prioritising the queue, but also, for determining if any bounce messages
are to be sent. I.e. if the Precedence value is negative, no bounce message
will EVER be generated (no matter what the error condition). BTW, I checked
this with some mail messages, the manual is right.
Normally the following standard Precedence values are defined in the
sendmail.cf file:
Pspecial-delivery=100
Pfirst-class=0
Pjunk=-100
I presume that Precedence classes not specified in the .cf file default to
zero? (anyone who knows for sure?)
This would imply that message with Precedence: bulk normally generate
bounce messages in case of errors.
If someone wants to add a "Pbulk" line in his sendmail.cf file I urge him
NOT to give it a negative value. I.e. suggested hierarchy:
Pspecial-delivery=100
Pfirst-class=50
Pbulk=0
Pjunk=-100
BTW, since "Precedence: bulk" seems to be the right way to mark mail-messages
coming from mailinglists, I urge *everyone* to make sure that their mailinglist
software adds this field.
--
Sincerely, berg@pool.informatik.rwth-aachen.de
Stephen R. van den Berg (AKA BuGless). berg@physik.tu-muenchen.de
"And now for something *completely* different!"
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