Le 04/11/2024 à 22:22, Paul van der Vlis ([email protected]) a écrit :
Op 21-10-2024 om 16:48 schreef Baptiste TANDA ([email protected]):
Hi everybody,
Our SOGo mails are refused by the mail server @orange.fr with the
following error :
"/552 5.2.0 Message contains bare CR and is violating 822.bis section
2.3/"
We've investigated the issue and noticed that this happen everytime
we use a special french character ("à" for example) and/or when we
have several lines in our mail (at least 2 lines).
We also noticed that in such cases, and only in such cases, a header
is added : "Content-Tranfer-Encoding: quoted-printable"
It does not happen when we have a single simple line in our email
body without any special characters.
By the way, we can send attachment without any issue, as long as
there is no "...quoted-printable"
The server is a Debian 11 with Exim4 (4.94.2-7) and SOGo
(5.11.2.20241016-1)
Any idea how to solve that issue ?
I guess you are using Cyrus IMAP, it's a known issue there. Bare CR's
are refused. That's correct, but other IMAP servers do not. Better ask
in the mailing list of Cyrus. This has nothing to do with SOGo.
On our SOGo server we use dovecot IMAP server. However, dovecot is not
involved while sending mail : at the time of sending, only SOGo web
interface and Exim SMTP are involved.
Maybe you are talking about the recipient's side ? In that case, we can
not do anything, as Orange is one of the main email provider in France...
What I use since many years as a workarround is adding this line to
main.cf from Postfix, and that helps:
message_strip_characters = \0
But you are using Exim and I don't know how to do it there, or how to
do it in Cyrus. But maybe it helps to find a solution.
I'll try to find an equivalent of this option in Exim and see what it gives.
Bye,
Paul
