I've just received this back from one of my customers, and I can't figure out who has blacklisted me - even though I've checked my domain's IP addresses against Spamcop's database and I don't show up there, however I've been told that Spamcop is blocking messages and not informing or warning ISP's that they're going to be blocked - see what you think of these headers customer's names appear as "x" to protect them. When I call the phone number listed in the reject, it's been disconnected. I'm at a loss, other than to give these customers another domain's email address. We conform with ALL RFC's and use Postini for spam inbound and outbound. > Hi. This is the qmail-send program at mail.ctesc.net. > I'm afraid I wasn't able to deliver your message to the following > addresses. > This is a permanent error; I've given up. Sorry it didn't work out. > > <ken[at]kenpehl.us>: > 184.108.40.206 does not like recipient. > Remote host said: 553 65.127.72.* rejected due to spam, contact > 480-505-8877 (Attack detected from pool 220.127.116.11)65.127.72.* > rejected due to spam, contact 480-505-8877 (Attack detected from pool > 18.104.22.168) Giving up on 22.214.171.124. > > --- Below this line is a copy of the message. > > Return-Path: <xxxxx[at]ctesc.net> > Received: (qmail 3171 invoked from network); 21 Mar 2005 15:17:21 -0000 > Received: from dial-65-127-72-125.ctesc.net (HELO Wilbur) > (126.96.36.199) > by mail.ctesc.net with SMTP; 21 Mar 2005 15:17:21 -0000 > Message-ID: <001501c52e29$5726bae0$7d487f41[at]Wilbur> > From: <xxxxxx[at]ctesc.net> > To: "Ken Pehl" <ken[at]kenpehl.us> > Subject: Try this again > Date: Mon, 21 Mar 2005 09:16:43 -0600 > MIME-Version: 1.0 > Content-Type: multipart/alternative; > boundary="----=_NextPart_000_0005_01C52DF6.B2891460" > X-Priority: 3 > X-MSMail-Priority: Normal > X-Mailer: Microsoft Outlook Express 6.00.2900.2180 > X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 > > This is a multi-part message in MIME format.