I am getting the following message with all attamepts to send e-mail.My provider has just migrated server - with several problems - and as our backlog of e-mails came in, so we lost outgoing mail. Any suggestions would be welcomedThe following recipient(s) could not be reached: 'xxxxt' on 03/07/2009 23:59 550 Rejected message because xx.xx.xx.xx is in a black list at dnsbl.sorbs.net

It seems like you've been blacklisted. I would check here to confirm it. http://www.au.sorbs.net/lookup.shtml Mark Morowczynski|MCT| MCSE 2003:Messaging, Security|MCITP:ES, SA,EA|MCTS:Windows Mobile Admin|Security+|http://almostdailytech.com

Hi, You can check the below link if your domain MX ip address is blacklisted or not. http://www.mxtoolbox.com/blacklists.aspx If your ip address is blacklisted then you may find the link when you can enter the site where your ip is blacklisted and can request for removing the same. To avoid this situations in futures 1. make sure your smtp server is not acting as a open relay 2. Check your user internal network is not sending spam mails 3. configre Domain key and SPF http://smtpport25.wordpress.com/2009/06/17/domainkey-implementation/ http://www.openspf.org/ Regards. Krishna |MCSE:M http://smtpport25.wordpress.com/

hi JohnJenyou may get new ip if you are using static ip address. Your ip address is on black list. But easy way not using static ip address you may change your dynamic ip. You can contact if you have the same problem after the change dynamic ip address with your ISP.I see that many ip address on black list of ISP poor. Or another thing you have trojen on ports... this last idea.Dou imal Ltd. ti. Yksel Cad. No: 34/17 Kzlay - ANKARA - TURKEY 90 312 433 23 15 / 21 Mehmet Arkn Grbz igtayazilim@hotmail.com 90 555 339 79 79

You really dont want to just keep moving IP address around if you are being blacklisted. You want to find out from these places why you are being blacklisted to solve the root cause of the issue. Mark Morowczynski|MCT| MCSE 2003:Messaging, Security|MCITP:ES, SA,EA|MCTS:Windows Mobile Admin|Security+|http://almostdailytech.com