Assuming you are innocent of spamming, it is highly likely that the IP
address was previously used by a spammer and then as soon as it got blocked
they got a different IP address. So you need to do as others are saying;
follow the instructions in the rejection message.
If you cannot get your IP address unblocked, I would contact your ISP and
get a different IP address. I assume that you are not paying for a static IP
address. Many ISPs will give it's customers the same IP address for many
months, so even though it is not static (fixed) it is nearly the same as
We got Verizon in February. The Wikipedia site had a block on our IP address
that was created a year ago. The block expired 3 days ago; in other words,
the guilty person gave up the IP address soon after they got blocked but the
block persisted for many months after that. Therefore blocking IP addresses
is very likely to inconvenience innocent people. The organizations that do
the blocking won't improve their procedures unless we complain. Now that the
Wikipedia block has expired for me, I need to complain to Wikipedia. You
need to take appropriate action too.
"Larry" <Larry@newsgroup> wrote in message
> What does this mean and how do I get rid of it?
> Your message cannot be delivered to the following recipients:
> Recipient address: lhayward555@newsgroup
> Reason: Server rejected MAIL FROM address.
> Diagnostic code: smtp;550 SC-004 Mail rejected by Windows Live Hotmail
> policy reasons. A block has been placed against your IP address because we
> have received complaints concerning mail coming from that IP address. If
> are not an email/network admin please contact
> Remote system: dns;mx4.hotmail.com