Hi Victor,
Thanks again for you help. I really appreciate the time and effort you put
in helping and educating me.
I've succesfully upgraded to postfix 2.5.6 this morning.
I'm still a bit confused about your remarks regarding the "null_sender="
parameter.
Am I correct in understandig that I should set null_sender to empty in the
pipe command to my content filter, because the default is set to
'MAILER-DAEMON'?
Currently my filter entry in the master.cf is as follows:
spamfilter unix - n n - - pipe flags=Rq
user=spamfilter argv=/usr/local/bin/spamfilter.sh -f ${sender} --
${recipient}
So it should become?:
spamfilter unix - n n - - pipe flags=Rq
null_sender= user=spamfilter argv=/usr/local/bin/spamfilter.sh -f
${sender} -- ${recipient}
Regards,
Bas.
> On Thu, Jan 08, 2009 at 06:56:55AM +0100, Bas van Reeuwijk wrote:
>
>> Hi Victor,
>>
>> Thanks for you very quick an accurate reply.
>>
>> I was indeed using -t in my contentfilter script and was generally
>> looking
>> in the wrong direction.
>>
>> That leaves me with one question in the sample script at
>> http://www.postfix.org/FILTER_README.html#simple_filter it reads:
>>
>> # Localize these. The -G option does nothing before Postfix 2.3.
>> INSPECT_DIR=/var/spool/filter
>> SENDMAIL="/usr/sbin/sendmail -G -i" # NEVER NEVER NEVER use "-t" here.
>>
>> As I use postfix 2.2, will this work?
>
> Yes. As the comment says, "-G" does nothing before Postfix 2.3. This
> is naturally documented:
>
> http://www.postfix.org/sendmail.1.html
>
> It is also important to preserve the empty envelope sender address,
> to avoid bounce loops in filtered mail, see the "null_sender="
> pipe transport option in the pipe(8) documentation.
>
> http://www.postfix.org/pipe.8.html
>
> Unfortunately, this requires Postfix 2.3, you really should upgrade.
>
> Don't lose the "--" between "-f ${sender}" and "${recipient}" or the
> space between "-f" and "${sender}" in the standard recipe (braces
> optional, matter of "taste"):
>
> command -f ${sender} -- ${recipient}
>
> without this, recipient names starting with "-" may be misprocessed as
> command-line options (but see the docs for "allow_min_user") and of course
> the correct empty null_sender breaks badly with "-f${sender}" (no space).
>
> --
> Viktor.
>
> Disclaimer: off-list followups get on-list replies or get ignored.
> Please do not ignore the "Reply-To" header.
>
> To unsubscribe from the postfix-users list, visit
> http://www.postfix.org/lists.html or click the link below:
> <mailto:majord...@postfix.org?body=unsubscribe%20postfix-users>
>
> If my response solves your problem, the best way to thank me is to not
> send an "it worked, thanks" follow-up. If you must respond, please put
> "It worked, thanks" in the "Subject" so I can delete these quickly.
>
-----------------------------------------
This email was sent using SquirrelMail.
"Webmail for nuts!"
http://squirrelmail.org/
