This is a fun one. If I do the following code in Django:
from django.core.mail import EmailMessage
message = EmailMessage('blah', 'From puppies','b...@hope.com',
['b...@hope.com'])
message.send()
The message that appears on the other end has this in the body:
>From puppies
A From at the beginning of any lines in the body gets a > prepended to
it.
Digging deep into Python's innards reveals that this is a somewhat
esoteric protection in case you're writing out Unix mailbox files. The
specific issue is here:
http://docs.python.org/release/2.6.2/library/email.generator.html#email.generator.Generator
and involves the mangle_from_ flag.
The hugely more likely case is that if you're using Django's
EmailMessage class you're sending emails rather than writing Unix
mailbox files and are running into this bug that way.
One proposed solution would be to override the __str()__ methods on
django.core.mail.SafeMIMEText and django.core.mail.SafeMIMEMultipart.
That method by default calls as_string() which in turn creates a
Generator with mangle_from_ set to True - see email.message.Message.
If the implementation in the Django classes looked something like
this, it would work fine:
def __str__(self):
from email.generator import Generator
fp = StringIO()
g = Generator(fp, mangle_from_ = False)
g.flatten(self, unixfrom=self.unixfrom)
return fp.getvalue()
I submitted this as a ticket - http://code.djangoproject.com/ticket/13433
- and I'm happy to do patches/test/docs as appropriate but I'd love to
get some thoughts on the best approach to fix it.
--
--Leo
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