ALL, Well I got my answer, and thought I would pass the info along. As I suspected we were blacklisted at MSN, by their algorithms. My ISP was able to get through to them and get some answers. Apparently the block is only supposed to last for 24 hours. Then the block is supposed to be lifted. According to Microsoft they have been finding that there is a new scam targeting at College students that if they install "A" program and run it they will be paid $50 dollars a month. This program is actually bursting out spam from their pc through the colleges internet connection. Microsoft did not supply any info as to what program, nor did they give up any info as to when they were spammed by my IP. According to Microsoft this algorithm is only on msn.com, but they are in the process of merging hotmail and msn.com. Over the next month. Hence email to hotmail accounts would go through but not mail to msn.com. I was told to look for high bursts of traffic to msn in order to try to find the offending pc on my network. I should be able to do this by examining my firewall logs. My question does any one know of such applications and possibly what ports they may be using. If I can find that info then possibly I can either block the ports or use nbar on my firewall to deny access to the applications packets. Will Glasser Director Of Computer Operations Southern Vermont College 802-447-6344 wglasser@xxxxxxx www.svc.edu -----Original Message----- From: Mark Fugatt [mailto:mark@xxxxxxxxx] Sent: Thursday, March 06, 2003 2:43 PM To: [ExchangeList] Subject: [exchangelist] RE: MSN Mail http://www.MSExchange.org/ Hi Will I don't think your alone on this one, a lot of my customers have been experiencing the same problem with MSN, it would appear that MSN blocked a lot of domains recently in error and it would appear they are working on the issue, there is a news article somewhere about it, I will see if I can find it. Glad to hear your moving to Exchange 2000, if you want to attend a class, I will be teaching a Microsoft Exchange 2000 class for Panurgy Training in Burlington, VT week of April 7th and if you want more info please feel free to contact me. Mark Fugatt MCT, MCSE, Microsoft Exchange MVP Pentech Office Solutions Inc Rochester, NY Tel: 585 586 3890 Fax: 585 249 0316 www.4mcts.com www.exchangetrainer.com -----Original Message----- From: Will [mailto:wglasser@xxxxxxx] Sent: Thursday, March 06, 2003 2:32 PM To: [ExchangeList] http://www.MSExchange.org/ This is a multi-part message in MIME format. ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: wglasser@xxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')