Not sure if this is the right forum as I'm new here, but I got the following meesage when trying to send email to a client (I've substitued their email address):
Your message did not reach some or all of the intended recipients.
Subject: Excel Courses
Sent: 03/06/2008 18:05
The following recipient(s) cannot be reached:
info[at]client.co.uk on 03/06/2008 18:05
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<cyberstudios.co.uk #5.5.0 smtp;550 Rule imposed as PaulBrown[at]cyberstudios.co.uk is blacklisted on SpamCop (see www.spamcop.net)>
I only receive this message when emailing this particular recipient. Is the email being blocked at their end or mine?