This is the mail system at host
out38.mail.ovh.net.
I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The mail system
<
Cust...@iprafrance.com>: host
mxplan4.mail.ovh.net[193.70.62.242] said: 554
5.4.12 SMTP; Hop count exceeded - possible mail loop detected on message id
<CAMN9=
dsmzO-ZrHXtQVDBQAPDA8P...@mail.gmail.com> (in
reply to end of DATA command)
How can i fix this ? all my emails are failing.