Hi Everyone.&nbsp; I am trying to gifure out why I am getting a 451 error when clients are trying to send email:<br><br>Client error:<br><span style="font-size: 10pt; font-family: &quot;Arial&quot;,&quot;sans-serif&quot;;">Task
&#39;<a href="http://mail.csdsinc.com">mail.csdsinc.com</a> - Sending&#39; reported error (0x800CCC6A) : &#39;Your outgoing
(SMTP) e-mail server has reported an internal error. If you continue to receive
this message, contact your server administrator or Internet service provider
(ISP).&nbsp; The server responded: 451 mail server temporarily rejected message
(#4.3.0)&#39;</span><br><br><br>Here is a tail of my smtp log.&nbsp; <br><br>@4000000047586d0f1cf5eae4 simscan: connect error 2<br>@4000000047586d0f1d36b4d4 connect(): Connection refused<br>@4000000047586d0f1d3e6594 qmail-smtpd: qq soft reject (mail server temporarily rejected message (#4.3.0)): MAILFROM:&lt;removed to protect the innocent@@
<a href="http://edgemore.com">edgemore.com</a>&gt; RCPTTO:removed top protect the <a href="mailto:innocent@csdsinc.com">innocent@csdsinc.com</a><br><br>Clam &amp; Spam logs are normal.<br><br><br><br>Any ideas?<br><br><br>
Thanks,<br><br>Ed<br>