email errors mailer-daemon 554 errors

When ever anyone joins, or uses a function to send an email it sends me back an error mailer-daemon 554 5.7.1 subject

like:

Hi. This is the qmail-send program at secure8.apollohosting.com.
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.

<ps2jerry@msn.com>:
206.125.223.70 failed after I sent the message.
Remote host said: 554 5.7.1 Message rejected because of unacceptable content.  For help, please quote incident ID 146132998.

--- Below this line is a copy of the message.

Return-Path: <info@joyride-usa.com>
Received: (qmail 32259 invoked by uid 10463); 6 Nov 2008 14:31:30 -0600
Date: 6 Nov 2008 14:31:30 -0600
Message-ID: <20081106203130.32257.qmail@secure8.apollohosting.com>
To: ps2jerry@msn.com
Subject: =?UTF-8?B?Rm9yZ290IHBhc3N3b3JkIGVtYWlsIG1lc3NhZ2U=?=
X-PHP-Script: www.joyride-usa.com/jr/forgot.php for 71.121.142.15
Content-type: text/plain; charset=UTF-8
MIME-Version: 1.0
From: =?UTF-8?B?Sm95cmlkZSBDbG90aGluZw==?= <info@joyride-usa.com>


Dear J-man,

Your member ID: ***

Your password: **********

You must login here: http://www.joyride-usa.com/jr/member.php

Thank you for using our services!

--
Joyride Clothing mail delivery system!!!
Auto-generated e-mail, please, do not reply!!!

whats going on here?

Quote · 13 Nov 2008

If you haven't fixed this already, try doing a global search/replace on your site files lokking for the string '\r\n'

Replace that string with '\n'  (get rid of all the \r's).  For some reason many mail servers don't like the \r and will send an improper email.

There is another thread here somewhere that deals with that issue.

Shared Dolphin Hosting w/RMS
Quote · 29 Aug 2009
 
 
Below is the legacy version of the Boonex site, maintained for Dolphin.Pro 7.x support.
The new Dolphin solution is powered by UNA Community Management System.