I'm not receiving messages from hotmail and yahoo accounts

From: Brenna (anonymous_at_discussions.microsoft.com)
Date: 03/17/04


Date: Tue, 16 Mar 2004 23:38:47 -0800

I am receiving most messages except those from hotmail and
yahoo. If I send first and then they reply with the same
message I get them. Anyone know why this is happening,
please?