On Sat, 10 Dec 2022 at 19:05, <pa...@quillandmouse.com> wrote: > On Fri, 9 Dec 2022 20:39:34 -0600 Greg Marks <gtma...@gmail.com> wrote:
> > In a recent instance, the body of the e-mail contained a line > > beginning with the word "From"; the sendmail program prefixed the > > line with the character ">" and a space (evidently interpreting > > "From" as a header line that needed to be quoted). This was more > > than just a trivial annoyance, since it rendered my digital signature > > on the e-mail invalid. > > Is there a way to tell the Postfix sendmail command not to alter any > > such lines in the body of the message? (I'm afraid I wasn't able to > > discern an answer in the man page for sendmail or by searching the > > postfix.org site.) > You don't want to do this. Consider an MUA which stores your mail in > "mbox" format-- one email right after another in one file. The > delimiter is a line which starts at the left margin with the word > "From". For this to work, any other line which starts with "From" must > be "armored". And the way you do that is to precede it with "> ". > I don't know the RFCs involved, but I'm guessing they mandate or > suggest this treatment. Here's a reference describing 'mbox' format, which provides reference RFCs: https://manpages.debian.org/bullseye/mutt/mbox.5.en.html
