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', '[email protected]', > ['[email protected]']).message().as_string() > MIME-Version: 1.0 > Content-Type: text/plain; charset="utf-8" > Content-Transfer-Encoding: 7bit > Subject: subject > From: [email protected] > To: [email protected] > 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 [email protected]. To post to this group, send email to [email protected]. 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.
