----- Original Message -----
From: "Sam Jones" <sam_jone...@btinternet.com>
To: <postfix-users@postfix.org>
Sent: Tuesday, April 24, 2012 6:23 PM
Subject: Does Cleanup (or something) change message body line endings?
Good afternoon,
I've just been troubleshooting an issue with the php mail() function and
Postfix.
Keeping it short and to the point it appears that DKIM can be broken
because something (assuming Cleanup) changes the line endings in the
body section of the mail after it has been signed.
What I noticed (eventually.....) was that text areas in forms submitted
to a PHP script contained line endings \r\n. These were passed through
to the Postfix sendmail implementation care of the php mail() function
where it went:
pickup,cleanup,qmgr,smtp,smtpd,smtp before going into: dkimproxy.out
Then, after signing it went:
cleanup,qmgr,smtp
But by the time it arrived with the recipient the body had changed (not
apparent to the eye) and this was happening:
dkim=neutral (body hash did not verify)
Now, if I manually strip the line endings \r\n and replace them a plain
newline \n, it works perfectly suggesting something strips the line
endings if the are \r\n after it has been signed.
Initially I thought 'it won't be Postfix doing this' and I checked:
http://www.postfix.org/cleanup.8.html to make sure it was not
documented. The only fly in the ointment of that train of thought was
another Postfix that I tested against (so I had Postfix to Postfix)
where I got:
(amavisd-new); dkim=softfail (fail, message has been altered)
It's not a big issue, it's easy to filter out the spurious \r coming in
from PHP, but I'd just like to know for my own piece of mind that I'm
not going mad and that something is doing a little house-keeping here?
Thank you, in advance, for any replies.
just curious, why you are behind Yahoo with an internal ip?
