On Wed, 2010-03-24 at 08:27 -0430, Patrick O'Callaghan wrote:
> possibly somewhere along the line the HTML is being reflowed or in
> some way modified, which would destroy the signature. I can't really
> see how that could happen

We've seen plenty of plain text message parts being transcoded in
transit by some allegedly "helpful" mail server (turning quoted
printable into 8-bit, etc.). I wouldn't be the slightest bit surprised
at a mail server doing the same sort of thing to text/html content.

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On Thu, 2010-03-25 at 01:54 +1030, Tim wrote:
> On Wed, 2010-03-24 at 08:27 -0430, Patrick O'Callaghan wrote:
> > possibly somewhere along the line the HTML is being reflowed or in
> > some way modified, which would destroy the signature. I can't really
> > see how that could happen
>
> We've seen plenty of plain text message parts being transcoded in
> transit by some allegedly "helpful" mail server (turning quoted
> printable into 8-bit, etc.). I wouldn't be the slightest bit surprised
> at a mail server doing the same sort of thing to text/html content.

Quite, but the OP says it all works properly if he sticks to TB. Even
allowing for the difference between inline PGP and PGP/MIME, it would
seem particularly perverse of the intermediate server to mess with one
and not the other. But I guess stranger things have happened ...

poc

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Tim:
>> We've seen plenty of plain text message parts being transcoded in
>> transit by some allegedly "helpful" mail server (turning quoted
>> printable into 8-bit, etc.). I wouldn't be the slightest bit surprised
>> at a mail server doing the same sort of thing to text/html content.

Patrick O'Callaghan:
> Quite, but the OP says it all works properly if he sticks to TB. Even
> allowing for the difference between inline PGP and PGP/MIME, it would
> seem particularly perverse of the intermediate server to mess with one
> and not the other. But I guess stranger things have happened ...

But one client might be using a different content encoding scheme, by
default. The original poster can easily test this by writing a message
in each, then looking at the raw message kept in their sent mail folder,
before any external mail server has a chance to alter it.

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On Wed, Mar 24, 2010 at 4:36 PM, Patrick O'Callaghan
<pocallaghan@gmail.com> wrote:
> On Thu, 2010-03-25 at 01:54 +1030, Tim wrote:
>> On Wed, 2010-03-24 at 08:27 -0430, Patrick O'Callaghan wrote:
>> > possibly somewhere along the line the HTML is being reflowed or in
>> > some way modified, which would destroy the signature. I can't really
>> > see how that could happen
>>
>> We've seen plenty of plain text message parts being transcoded in
>> transit by some allegedly "helpful" mail server (turning quoted
>> printable into 8-bit, etc.). *I wouldn't be the slightest bit surprised
>> at a mail server doing the same sort of thing to text/html content.
>
> Quite, but the OP says it all works properly if he sticks to TB. Even
> allowing for the difference between inline PGP and PGP/MIME, it would
> seem particularly perverse of the intermediate server to mess with one
> and not the other. But I guess stranger things have happened ...

Well guys, the mystery has resolved itself with the only action by me
being an update at the TB end - before doing the tests that were
suggested I updated my version of TB - to Mozilla/5.0 (X11; U; Linux
i686; en-US; rv:1.9.2.2pre) Gecko/20100323 Lightning/1.0b2pre
Lanikai/3.1b2pre - whereas I had been running earlier versions of TB
3.1b2pre for quite some time and indeed prior to that 3.1a - until
today I was using a version from a few days ago and the problem was
still present until that version. At the same time I updated the
enigmail and lightning extensions to the most recent. However with
the new version I can now send from Evolution and I get correct
signature verification for HTML mail, both with a straight simple sent
message, and also if replying leaving the quoted text from the
original. So now I get full and correct signature verification both
ways.

So the bug was within Thunderbird - I don't know how long this bug has
been there but I seem to remember an issue with this going quite some
time back - so whether it is in the handling of received mail by
Thunderbird itself or whether the enigmail extension was the problem I
don't know - but I do know that this is now working!

So maybe the TB/enigmail developers were monitoring this thread! ( I
presume that normal updates to F12 this morning would not have made
any significant changes that would have any impact on this issue)

Either way I am very pleased this is resolved in the new version....

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On Wed, Mar 24, 2010 at 6:39 PM, mike cloaked <mike.cloaked@gmail.com> wrote:

> Well guys, the mystery has resolved itself with the only action by me
> being an update at the TB end - before doing the tests that were
> suggested I updated my version of TB - to Mozilla/5.0 (X11; U; Linux
> i686; en-US; rv:1.9.2.2pre) Gecko/20100323 Lightning/1.0b2pre
> Lanikai/3.1b2pre - whereas I had been running earlier versions of TB

However - one fly remains in the ointment!

If wholly within TB you have a mail on the screen and select
Message->Forward as-> attachment and then send it, signed, to yourself
and receive it back in TB then what I found is that I get the same bad
signature problem - so this is a purely Thunderbird issue that I
believe has been a bug for a long time - this is an easy test anyone
can verify - using HTML mail. Forwarding inline works fine though.

I have not tried this last test with plaintext mail forwarded as
attachment - but this is clearly another bug that ought to be resolved
by TB developers.

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On Wed, 2010-03-24 at 18:39 +0000, mike cloaked wrote:
> Well guys, the mystery has resolved itself with the only action by me
> being an update at the TB end

Ahh, the old "not using the latest version" trick.

poc

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On Wed, 2010-03-24 at 18:47 -0430, Patrick O'Callaghan wrote:
> Ahh, the old "not using the latest version" trick.

Is that said with a Maxwell Smart or Inspector Clouseau voice? ;-)


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On Wed, Mar 24, 2010 at 11:17 PM, Patrick O'Callaghan
<pocallaghan@gmail.com> wrote:
> On Wed, 2010-03-24 at 18:39 +0000, mike cloaked wrote:
>> Well guys, the mystery has resolved itself with the only action by me
>> being an update at the TB end
>
> Ahh, the old "not using the latest version" trick.
>
> poc

Yeah, well I am using somewhat newer than current released version
anyway! - the released version (current) has known problems and I have
been using the 3.1b nightlies for quite some time - I am fairly sure
that the released version will suffer from the same problems that I
have been seeing, but maybe someone could test (?) - so now with the
latest non-released 3.1 things have improved - but there is still the
problem when forwarding as attachment - and it would be nice to know
if this is seen in the current release as well as in the cutting edge?
It is not too long before 3.1 gets released so I guess it is on the
final phase of cleaning up code before it goes out the door.

Of course there is also 3.2a but that is beyond cutting edge and into
the bleeding edge regime!

Mike

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On Thu, 2010-03-25 at 16:25 +1030, Tim wrote:
> On Wed, 2010-03-24 at 18:47 -0430, Patrick O'Callaghan wrote:
> > Ahh, the old "not using the latest version" trick.
>
> Is that said with a Maxwell Smart or Inspector Clouseau voice? ;-)

Would you believe Grytpype-Thynne? How about Neddy Seagoon? :-)

poc

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On Thu, Mar 25, 2010 at 2:06 PM, Patrick O'Callaghan
<pocallaghan@gmail.com> wrote:
> On Thu, 2010-03-25 at 16:25 +1030, Tim wrote:
>> On Wed, 2010-03-24 at 18:47 -0430, Patrick O'Callaghan wrote:
>> > Ahh, the old "not using the latest version" trick.
>>
>> Is that said with a Maxwell Smart or Inspector Clouseau voice? *;-)
>
> Would you believe Grytpype-Thynne? How about Neddy Seagoon? :-)
Ahh - Neddy - in a high voice - now that gives some ages away!

But did you try the "forwarding test"!? (Or as Clouseau would say,
"Vee need eveedense zat ze securitay must fully be proof of ze bahm",
walking into the door as he leaves the room elegantly!)

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