Hi ! I am implementing DKIM validation for my emails. I noticed than some emails do not pass DKIM validation due to different body hashes. I followed the email flow, and found that postfix automatically truncates lines to 998 characters if they are too long (in accordance to https://tools.ietf.org/html/rfc2822#section-2.1.1).
Such emails can be generated by Sentry, by my own apps, etc.. Now about Django: When using EmailMessage, the charset is utf-8, and the Content-Transfer-Encoding is either 7bit or 8bit (automatically changes between them when the body contains non-ASCII characters). cf the ticket where the developers decided to switch from base64 to this behaviour : https://code.djangoproject.com/ticket/3472 Quick validation with: >>> from django.core.mail import EmailMessage > >>> print EmailMessage('subject', 'body', 'from...@example.net', > ['to....@example.net']).message().as_string() > MIME-Version: 1.0 > Content-Type: text/plain; charset="utf-8" > Content-Transfer-Encoding: 7bit > Subject: subject > From: from...@example.net > To: to....@example.net > Date: Wed, 30 Apr 2014 11:01:44 -0000 > Message-ID: <20140430110144.1564.85693@localhost> > body So at the moment, because Django says not to use base64 for utf-8 emails in its code, Django does no longer make sure that the lines are not too long, despite the RFC. I see 3 ways to make sure that the lines are not too long : - automatically split lines in a way that can be recognized by email readers (no idea how to do that properly..) (in Django/in the apps) - go back to base64 (but it seems to increase spam scores) - switch to quoted-printable (functioning code below, no idea of the potentially negative impact) from django.core.mail.message import utf8_charsetfrom email import Charset utf8_charset.body_encoding = Charset.QP What do you think ? Is Django code / app code the correct place to fix this ? Should Django respect the RFC ? Any other ideas ? Thanks ! -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To post to this group, send email to django-users@googlegroups.com. Visit this group at http://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/c7e621c8-828e-4ba0-af8c-e12b21142acf%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
