Message has implicit destination - ???

searched the web, searched the sourcecode and can't find out what this means or how to fix it.
most systems can send mail fine to the lists but one sun system that needs to cannot, and everytime it tries, I get that message from mailman:
As list administrator, your authorization is requested for the following mailing list posting:
List: some@list.at.my.company
From: someuser@somehost.com
Subject: (no subject)
Reason: Message has implicit destination
the user is subscribed. what can i do to get around/fix this problem?
this happens when doing :
echo "testing" | mail some@list.at.my.company
the client machine is a solaris 2.6(sparc) running sendmail 8.9.1 from sunfreeware.com, i have it masqerading as itself. if i don't masqerade it shows mails comming from user@hostname not user@hostname.domainname. and mailman doesnt want to let a subscriber subscribe as user@hostname.
running mailman 2.0beta1
thanks!
nate
-- Nate Amsden System Administrator GraphOn http://www.graphon.com

At 1:49 PM -0800 10/30/00, Nate Amsden wrote:
searched the web, searched the sourcecode and can't find out what this means or how to fix it.
most systems can send mail fine to the lists but one sun system that needs to cannot, and everytime it tries, I get that message from mailman:
it means the list address isn't in the To: or CC: lines.
-- Chuq Von Rospach - Plaidworks Consulting (mailto:chuqui@plaidworks.com) Apple Mail List Gnome (mailto:chuq@apple.com)
Be just, and fear not.

Chuq Von Rospach wrote:
it means the list address isn't in the To: or CC: lines.
woohoo! thanks a lot, adding the -t option to mail(adds a To: line for each recipient) fixed it :)
thanks again!
-- Nate Amsden System Administrator GraphOn http://www.graphon.com
participants (2)
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Chuq Von Rospach
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Nate Amsden