Try:

(1)(650) 964-7200, 10:00 AM - 5:00 PM Pacific Standard Time, Monday through Friday.

I think that may work, got it here:

http://www.hotmail.msn.com/cgi-bin/dasp/ua_info.asp?pg=faq

On 10/30/06, Edward F. Klimowicz <edwardk@voicenet.com> wrote:

Is there a postmaster from MSN/Hotmail out there?  Mail from my domain to any
of yours is being junked and randomly blackholed.  No progress has been made
yet with the normal tech support.  Please reply off list if you can help.
--
Edward F. Klimowicz
Voicenet Systems Administration
edwardk@voicenet.com
215.259.2131