Error when sending mail

Hello,

since the upgrade of my installation from 3.4.4 to 4.0.6, i don't have notification and all my email are note send(they are in error).

I join the log error, can your please Help me.

Best regards

the error log:
....external/PHPMailer/class.smtp.php' at line (218)
2013-12-23 15:39:16 ***** ERROR ***** cause = stream_socket_client(): unable to connect to auth.smtp.1and1.fr:587 (Connection timed out)
2013-12-23 15:39:16 ***** ERROR ***** Error sending mail
2013-12-23 15:39:16 ***** ERROR ***** SMTP Server : auth.smtp.1and1.fr
2013-12-23 15:39:16 ***** ERROR ***** SMTP Port : 587
2013-12-23 15:39:16 ***** ERROR ***** Mail stored in Database : #3805
2013-12-23 15:39:16 ***** ERROR ***** PHPMail error : SMTP connect() failed.
2013-12-23 15:39:16 ***** ERROR ***** PHPMail debug : <span class="messageERROR" >ERROR : Impossible to load class SMTP<br/> => Not found in ../model/SMTP.php <br/> => Not found in ../model/persistence/SMTP.php <br/></span><input type="hidden" id="lastSaveId" value="" /><input type="hidden" id="lastOperation" value="ERROR" /><input type="hidden" id="lastOperationStatus" value="ERROR" />

Hello

I use php 5.4, i add the third parameter.
I always get the error.
the log is:
2013-12-24 22:37:28 ***** ERROR ***** on file '../external/PHPMailer/class.smtp.php' at line (218)
2013-12-24 22:37:28 ***** ERROR ***** cause = stream_socket_client(): unable to connect to auth.smtp.1and1.fr:25 (Connection timed out)
2013-12-24 22:37:28 ***** ERROR ***** Error sending mail
2013-12-24 22:37:28 ***** ERROR ***** SMTP Server : auth.smtp.1and1.fr
2013-12-24 22:37:28 ***** ERROR ***** SMTP Port : 25
2013-12-24 22:37:28 ***** ERROR ***** Mail stored in Database : #3812
2013-12-24 22:37:28 ***** ERROR ***** PHPMail error : SMTP connect() failed.
2013-12-24 22:37:28 ***** ERROR ***** PHPMail debug :

Best regards.

I tested with port 25 and port 587, and i have the same error.
with V3.4.4, i used port 25 and the emails are sent. Only with the new version i have the error.

I change my configuration to set gmail.com, and i have the same error.

Is it a problem of password?

the password is written in plain text in the menu settings globlaes, maybe it is encrypted in the database.
When the connection to the SMTP server, the password remains encrypted and the connection is impossible due to the wrong password sent

Best regards.