Hi Paul, The hotmail servers are identifying you as a potential spammer. It may be that one of the hotmail addresses you are sending out to is belonging to someone who has already been identified as a spammer and is confusing you and your distribution list. If you were to send a message to each one of these email addresses connected to hotmail and they go through then that might work for you. Paul. From: vicsireland-bounce@xxxxxxxxxxxxx [mailto:vicsireland-bounce@xxxxxxxxxxxxx] On Behalf Of Paul Dromey Sent: 15 January 2009 14:45 To: vicsireland@xxxxxxxxxxxxx Subject: [vicsireland] Hotmail Query Hi all. I've recently begun sending emails to multiple recipients, something I never had to do much before. When I sent an email to about 20 recipients, 6 of which were hotmail.com addresses, I was notified that one hotmail message was relayed, and one delayed. No account of the other 4. When I re-sent the delayed email, it once again came back as delayed but with the following annoying message at the end. 421 RP-001 The mail server IP connecting to Windows Live Hotmail server has exceeded the rate limit allowed. Reason for rate limitation is related to IP/domain reputation problems. If you are not an email/network admin please contact your E-mail/Internet Service Provider for help. Email/network admins, please visit http://postmaster.live.com <http://postmaster.live.com/> for email delivery information and support Also, I now know that the other 4 hotmail address emails from my initial effort were never delivered. Any ideas as to what's going on? To anticipate the question, the addresses I've used are correct. Thanks in anticipation Paul _____ I am using the Free version of SPAMfighter <http://www.spamfighter.com/len> We are a community of 5.8 million users fighting spam. SPAMfighter has removed 708 of my spam emails to date. The Professional version does not have this message _____ I am using the Free version of SPAMfighter <http://www.spamfighter.com/len> We are a community of 5.8 million users fighting spam. SPAMfighter has removed 5669 of my spam emails to date. The Professional version does not have this message ******************************************************************** NOTICE: The information contained in this email and any attachments is confidential and may be privileged. If you are not the intended recipient you should not use, disclose, distribute or copy any of the content of it or of any attachment; you are requested to notify the sender immediately of your receipt of the email and then to delete it and any attachments from your system. NCBI endeavours to ensure that emails and any attachments generated by its staff are free from viruses or other contaminants. However, it cannot accept any responsibility for any such which are transmitted. We therefore recommend you scan all attachments. Please note that the statements and views expressed in this email and any attachments are those of the author and do not necessarily represent the views of NCBI ********************************************************************