Unable to send emails from hotmail

[zesto]

Just wondering if anyone else has had this problem before and how they got it sorted? Any email i try to send from my hotmail account fails immediately and gives the following message. I have logged a call with MS as instructed.
Any idea why it is doing this?

This is an automatically generated Delivery Status Notification. The system was unable to deliver your email to its intended recipient(s). If you feel you received this message in error: 1. Go to support.msn.com and select MSN Hotmail no matter what MSN service or client you were using when you received this message. 2. Enter your full name, Hotmail mail address and (if possible) an alternate email address 3. Select I need something fixed, 4. Select My Mail 5. Select Outbound Mail Blocked 6. In the next box (for your comments), please copy/paste the following text in bold: 196.25.253.13 7. Complete the optional fields of the form, and click Submit. 8. An agent will respond to your request within 24 hours. Please do not submit more than one request, as this will delay our processing time. Thank you for your patience while we investigate your request

 

[broken1]

They might have flagged you for sending spam!

 

[zesto]

They might have flagged you for sending spam!

I thought about that too, but i have never sent spam from any address of mine.
I've never sent spam, period.
The IP address (if it is an IP) in the response MS sends isn't even mine.

The same thing happens when i try send an email from another hotmail address of mine.
Could it be something to do with my ADSL connection or my ISP?