Fwd: ezmlm warning

What does this mean? Is this a one-time error? Did anyone else get it? (Do you even get this message, or was I removed already?) Anyone familiar with this? ---------- Forwarded message ---------- From: <internals-help@lists.php.net> Date: Mon, Sep 23, 2013 at 4:36 PM Subject: ezmlm warning To: dor.tchizik@gmail.com Hi! This is the ezmlm program. I'm managing the internals@lists.php.net mailing list. I'm working for my owner, who can be reached at internals-owner@lists.php.net. Messages to you from the internals mailing list seem to have been bouncing. I've attached a copy of the first bounce message I received. If this message bounces too, I will send you a probe. If the probe bounces, I will remove your address from the internals mailing list, without further notice. I've kept a list of which messages from the internals mailing list have bounced from your address. Copies of these messages may be in the archive. To retrieve a set of messages 123-145 (a maximum of 100 per request), send an empty message to: <internals-get.123_145@lists.php.net> To receive a subject and author list for the last 100 or so messages, send an empty message to: <internals-index@lists.php.net> Here are the message numbers: 69050 --- Enclosed is a copy of the bounce message I received. Return-Path: <> Received: (qmail 21218 invoked for bounce); 11 Sep 2013 16:21:38 -0000 Date: 11 Sep 2013 16:21:38 -0000 From: MAILER-DAEMON@lists.php.net To: internals-return-69050-@lists.php.net Subject: failure notice Hi. This is the qmail-send program at lists.php.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. <dor.tchizik@gmail.com>: 76.75.200.58 failed after I sent the message. Remote host said: 550 5.6.0 Lone CR or LF in headers (see RFC2822 section 2.2)