my mail daemon "doesn't like recipient" ?
I seem to receive most of my mail, but some isn't coming through. For
example, sending to me from yahoo, my sister received the bounce
To: [her address]
Subject: failure delivery
Message from yahoo.com.
Unable to deliver message to the following address(es).
188.8.131.52 does not like recipient.
Remote host said: 550 relaying to <email@example.com> prohibited by administrator
Giving up on 184.108.40.206.
Is this *my* machine refusing to talk to yahoo? Have they been rbl'd
or some such? She's not the only one that gets messages like this.