Hello, I have a problem with mail notifications. It as already worked but now it doesn't.

I tried with the port 25 and 587

I tried severals things, on projeqtor and on the firewall of the internet box but I don't find where does the problem come from.

See the log files

2016-06-02 16:57:01.072 ** ERROR ** ERROR **
2016-06-02 16:57:01.076 ** ERROR ** on file '/volume1/web/projeqtor/external/PHPMailer/class.smtp.php' at line (344)
2016-06-02 16:57:01.081 ** ERROR ** cause = stream_socket_enable_crypto(): Peer certificate CN=`ssl0.ovh.net' did not match expected CN=`smtp.blaise-industries.fr'
2016-06-02 16:57:01.192 ** ERROR ** Error sending mail
2016-06-02 16:57:01.198 ** ERROR ** SMTP Server : smtp.blaise-industries.fr
2016-06-02 16:57:01.207 ** ERROR ** SMTP Port : 587
2016-06-02 16:57:01.211 ** ERROR ** Mail stored in Database : #161
2016-06-02 16:57:01.216 ** ERROR ** PHPMail error : SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
2016-06-02 16:57:01.221 ** ERROR ** PHPMail debug :
2016-06-02 17:04:44.164 ** ERROR ** ERROR **
2016-06-02 17:04:44.168 ** ERROR ** on file '/volume1/web/projeqtor/tool/projeqtor.php' at line (936)
2016-06-02 17:04:44.172 ** ERROR ** cause = Undefined variable: logLevel
2016-06-02 17:04:50.213 ** ERROR ** ERROR **
2016-06-02 17:04:50.219 ** ERROR ** on file '/volume1/web/projeqtor/external/PHPMailer/class.smtp.php' at line (344)
2016-06-02 17:04:50.224 ** ERROR ** cause = stream_socket_enable_crypto(): Peer certificate CN=`ssl0.ovh.net' did not match expected CN=`smtp.blaise-industries.fr'
2016-06-02 17:04:50.306 ** ERROR ** Error sending mail
2016-06-02 17:04:50.311 ** ERROR ** SMTP Server : smtp.blaise-industries.fr
2016-06-02 17:04:50.317 ** ERROR ** SMTP Port : 25
2016-06-02 17:04:50.323 ** ERROR ** Mail stored in Database : #162
2016-06-02 17:04:50.327 ** ERROR ** PHPMail error : SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
2016-06-02 17:04:50.331 ** ERROR ***** PHPMail debug :