On 22.04.24 22:55, Doug Hardie via Postfix-users wrote:
This is probably not the right place to be asking this as it is not
directly Postfix related, but I don't know a better group to ask. For
years I have sent text messages and just let the lines run on. Only
inserting a \n for the start of a new paragraph. I never exceed the 988
line length limit. My mail client does it's magic to make it smaller line
lengths and the recipient's puts it back together again so that it fills
whatever window size they are using. However, in the last couple days,
something has changed. Looking at the raw sent text of the message, the
lines are less than 80 bytes with an "=" at the end of each line that is
not a line end. Going back through some of my email history, I see that
occurring for years. It was never visible to me or any of my recipients.
I have a process that takes a portion of a received email and distributes
it to a small recipient list. I am one of the recipients and It arrived
with no cleanup. The = was at the end of every line. There was no
reassembly of the original lines. The outgoing email had the following
headers:
Content-Type: text/plain;
charset=us-ascii
Content-Transfer-Encoding: quoted-printable
I have searched the internet for some discussion of this and find nothing.
The RFCs don't seem to address it either. Given the normal thoroughness
of the RFCs I believe that just means I haven't found the right one. What
controls this behavior and what is needed to get the reassembly to work
again?
this is quoted-printable MIME formatting which wraps lines to <80 characters
per line and uses = at the end of line as continuation character.
see RFC 2045 section 6.7 for its definnition
I also recommend to look at the "format=flowed" option which is nicer
approach.
RFC 3676 addresses this.
--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
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