Thank you for your reply,
For your complete information, i have installed the CMandril plugin for control my delivered emails.
i have changed the emailing parameter of Uddeim in the system from PHPMAil(default) by mosMail and the users notification are correctly delivred with the SMTP emailing.
So with the joomla mailing and Uddeim it works, with CB mailing it does not work.
When i test with localhost Xamp and cmandril, all the mails work fine with SMTP including the CB mailing.
I note the difference between : i have no MX on localhost and i have put MX on my webhosting like required by cmandril.
I note an other difference :
the PublicMail plugin i use to contact an administrator (on other email box) works fine in the two cases.
PublicMail use $mail =& JFactory::getMailer(); (the joomla mailer i think)
the CB emailing seems to use /administrator/component/com_profiler/library/phpmailer/phpmailer.phpmailer.php and in this file i can see a DKIM DNS Resource Record variable. this variable is also used in the joomla php file from the /library/phpmailer/.
maybe in a different way and maybe it's the problem (i'am not sure, i am a beginner)
What do you think about this ?
Can you give me some php test lines to found the error or where can i put some "echo" to follow the function and find the error ?
Best Regards,
Bruno