Re: encoding issue with header_checks Windows-1252

[Wietse Venema]

Stefan Bauer:
> So you are saying that the client probably decoded the subject.

I am saying that the subject differs from what you have. There can
be any number of reasons including encoding, and incuding the
possibility that someone gave you text that was not part of the
message.

Wietse

> Thank you Wietse!
> 
> What might be the best way, to capture all kind of encodings for a specific
> string in subject?
> 
> We let our users choose mail routing path, if string is part of subject.
> Works with all clients, just not with some kind of Outlooks, entering
> postfix via office 365.
> 
> Am Samstag, 20. Juli 2019 schrieb Wietse Venema :
> > Stefan Bauer:
> >> I dont get it. Testing the above correctly shows
> >>
> >> Subject:
> >>
> =?Windows-1252?Q?[Cleartext]_Webinar_=84Noch_keine_55_und_ab_in_die_GKV=93?=
> >> FILTER cleartext:
> >>
> >> But the e-mail itself was not passed to the FILTER cleartext.
> >
> > Consider the possibiliy that the message subject is different
> > from what you think it is.
> >
> > Hint: Postfix does not decode header or body content.
> >
> > Wietse
> >

Re: encoding issue with header_checks Windows-1252

[Stefan Bauer]

So you are saying that the client probably decoded the subject.
Thank you Wietse!

What might be the best way, to capture all kind of encodings for a specific
string in subject?

We let our users choose mail routing path, if string is part of subject.
Works with all clients, just not with some kind of Outlooks, entering
postfix via office 365.

Am Samstag, 20. Juli 2019 schrieb Wietse Venema :
> Stefan Bauer:
>> I dont get it. Testing the above correctly shows
>>
>> Subject:
>>
=?Windows-1252?Q?[Cleartext]_Webinar_=84Noch_keine_55_und_ab_in_die_GKV=93?=
>> FILTER cleartext:
>>
>> But the e-mail itself was not passed to the FILTER cleartext.
>
> Consider the possibiliy that the message subject is different
> from what you think it is.
>
> Hint: Postfix does not decode header or body content.
>
> Wietse
>

Re: encoding issue with header_checks Windows-1252

[Wietse Venema]

Stefan Bauer:
> I dont get it. Testing the above correctly shows
> 
> Subject:
> =?Windows-1252?Q?[Cleartext]_Webinar_=84Noch_keine_55_und_ab_in_die_GKV=93?=
> FILTER cleartext:
> 
> But the e-mail itself was not passed to the FILTER cleartext. 

Consider the possibiliy that the message subject is different
from what you think it is.

Hint: Postfix does not decode header or body content.

Wietse

Re: encoding issue with header_checks Windows-1252

[Stefan Bauer]

I dont get it. Testing the above correctly shows

Subject:
=?Windows-1252?Q?[Cleartext]_Webinar_=84Noch_keine_55_und_ab_in_die_GKV=93?=
FILTER cleartext:

But the e-mail itself was not passed to the FILTER cleartext. Above subject
was extracted from mail client. I believe, there is something going wrong
with encoding.

Am Do., 18. Juli 2019 um 16:27 Uhr schrieb Wietse Venema <
wie...@porcupine.org>:

> Stefan Bauer:
> > Hi,
> >
> > header_checks = regexp:/etc/postfix/headerstring
> > /^Subject: .*\[cleartext\].*/ FILTER cleartext:
> >
> > And now, there is the following mail-Subject, that did not trigger the
> > above FILTER and i dont see why:
> >
> > Subject:
> >
> =?Windows-1252?Q?[Cleartext]_Webinar_=84Noch_keine_55_und_ab_in_die_GKV=93?=
> >
>
> Postfix does not decode headers.
>
> To test:
>
> echo "Subject: =?Windows-1252?Q?[Cleartext..." |postmap -q -
> regexp:/etc/postfix/headerstring
>
> Wietse
>

Re: encoding issue with header_checks Windows-1252

[Wietse Venema]

Stefan Bauer:
> Hi,
> 
> header_checks = regexp:/etc/postfix/headerstring
> /^Subject: .*\[cleartext\].*/ FILTER cleartext:
> 
> And now, there is the following mail-Subject, that did not trigger the
> above FILTER and i dont see why:
> 
> Subject:
> =?Windows-1252?Q?[Cleartext]_Webinar_=84Noch_keine_55_und_ab_in_die_GKV=93?=
> 

Postfix does not decode headers.

To test:

echo "Subject: =?Windows-1252?Q?[Cleartext..." |postmap -q - 
regexp:/etc/postfix/headerstring

Wietse

Re: encoding issue with header_checks Windows-1252

[Stefan Bauer]

only this single filter is present - no other filters.

Unfortunately thats not enough to trigger the filter.

Am Do., 18. Juli 2019 um 14:00 Uhr schrieb pasvon :

> What does the complete file /etc/postfix/headerstring look like?
> Does another line match a filter action and override the desired result?
> Have you defined any other header_checks (body for example)?
>
> That should be enough, too:
> /^Subject: .*\[cleartext\]/ FILTER cleartext:
>
>
>
> --
> Sent from: http://postfix.1071664.n5.nabble.com/Postfix-Users-f2.html
>

Re: encoding issue with header_checks Windows-1252

[Matus UHLAR - fantomas]

On 18.07.19 13:42, Stefan Bauer wrote:

man 5 header_checks

By default, regexp : and
  pcre : patterns are
case *insensitive*.


sorry, misread. Should be more careful.. 


Am Do., 18. Juli 2019 um 13:40 Uhr schrieb Matus UHLAR - fantomas <
uh...@fantomas.sk>:


On 18.07.19 13:35, Stefan Bauer wrote:
>header_checks = regexp:/etc/postfix/headerstring
>/^Subject: .*\[cleartext\].*/ FILTER cleartext:
>
>And now, there is the following mail-Subject, that did not trigger the
>above FILTER and i dont see why:
>
>Subject:

>=?Windows-1252?Q?[Cleartext]_Webinar_=84Noch_keine_55_und_ab_in_die_GKV=93?=


"cleartext" vs. "Cleartext" looks like case sensitivity problem.


--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
Remember half the people you know are below average.

Re: encoding issue with header_checks Windows-1252

[pasvon]

What does the complete file /etc/postfix/headerstring look like?
Does another line match a filter action and override the desired result?
Have you defined any other header_checks (body for example)?

That should be enough, too:
/^Subject: .*\[cleartext\]/ FILTER cleartext:



--
Sent from: http://postfix.1071664.n5.nabble.com/Postfix-Users-f2.html

Re: encoding issue with header_checks Windows-1252

[Stefan Bauer]

man 5 header_checks

By default, regexp : and
   pcre : patterns are
case *insensitive*.


Am Do., 18. Juli 2019 um 13:40 Uhr schrieb Matus UHLAR - fantomas <
uh...@fantomas.sk>:

> On 18.07.19 13:35, Stefan Bauer wrote:
> >header_checks = regexp:/etc/postfix/headerstring
> >/^Subject: .*\[cleartext\].*/ FILTER cleartext:
> >
> >And now, there is the following mail-Subject, that did not trigger the
> >above FILTER and i dont see why:
> >
> >Subject:
>
> >=?Windows-1252?Q?[Cleartext]_Webinar_=84Noch_keine_55_und_ab_in_die_GKV=93?=
>
>
> "cleartext" vs. "Cleartext" looks like case sensitivity problem.
> --
> Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
> Warning: I wish NOT to receive e-mail advertising to this address.
> Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
> I intend to live forever - so far so good.
>

Re: encoding issue with header_checks Windows-1252

[Matus UHLAR - fantomas]

On 18.07.19 13:35, Stefan Bauer wrote:

header_checks = regexp:/etc/postfix/headerstring
/^Subject: .*\[cleartext\].*/ FILTER cleartext:

And now, there is the following mail-Subject, that did not trigger the
above FILTER and i dont see why:

Subject:
=?Windows-1252?Q?[Cleartext]_Webinar_=84Noch_keine_55_und_ab_in_die_GKV=93?=



"cleartext" vs. "Cleartext" looks like case sensitivity problem.
--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
I intend to live forever - so far so good.

encoding issue with header_checks Windows-1252

[Stefan Bauer]

Hi,

header_checks = regexp:/etc/postfix/headerstring
/^Subject: .*\[cleartext\].*/ FILTER cleartext:

And now, there is the following mail-Subject, that did not trigger the
above FILTER and i dont see why:

Subject:
=?Windows-1252?Q?[Cleartext]_Webinar_=84Noch_keine_55_und_ab_in_die_GKV=93?=

Any ideas?

Stefan