Thank you, yes, i did.
For more information on this issue, here is a log capture with the same previously config :
starting hotmail.com/mta_name
connecting from mydomaine (a.b.c.d) to mx4.hotmail.com (65.54.188.94)
connected from a1.b1.c1.d1:39635
>>> 220 BAY0-MC2-F18.Bay0.hotmail.com Sending unsolicited commercial or bulk e-mail to Microsoft's computer network is prohibited. Other restrictions are found at
http://privacy.microsoft.com/en-us/anti-spam.mspx. Wed, 16 May 2012 06:44:22 -0700
<<< EHLO mydomaine
>>> 250-BAY0-MC2-F18.Bay0.hotmail.com (3.15.0.97) Hello [a1.b1.c1.d1]
>>> 250-SIZE 36909875
>>> 250-PIPELINING
>>> 250-8bitmime
>>> 250-BINARYMIME
>>> 250-CHUNKING
>>> 250-AUTH LOGIN
>>> 250-AUTH=LOGIN
>>> 250 OK
<<< MAIL FROM:<return@mydomaine> BODY=8BITMIME
<<< RCPT TO:<user@hotmail.com>
>>> 250 return@mydomaine....Sender OK
>>> 250 user@hotmail.com
<<< BDAT 1019 LAST
>>> 250 <BAY0-MC2-F18kZNrSCl0113df16@BAY0-MC2-F18.Bay0.hotmail.com> Queued mail for delivery
<<< QUIT
>>> 221 BAY0-MC2-F18.Bay0.hotmail.com Service closing transmission channel
closed mx4.hotmail.com (65.54.188.94) in=669 out=1160
done hotmail.com/mta_name
Thank You.