I have this problem occurring from one of my workstations. It happens repeatedly when sending from the same computer. Doug and others have verified (by sending test e-mails) that MSU has not been blocked as a whole and it seems unlikely that any portion of MSU has been blocked. More likely, individual computers have been added to their blocked IP list. In our case, it was the one computer on my network that managed to get a virus during the recent onslaught. This computer was mass-mailing for a few hours one day and likely that was why it was blocked. Not sure why only one in five messages was blocked. In my case, all messages to AOL recipients have been bounced back. From the description of the message it seems it is blocked at the mail router, not by the AOL user. Through e-mail correspondence, AOL referred me to a web page with FAQs. This page had no information concerning this error, nor could I find information concerning this error elsewhere on their site. Most likely, this was an attempt by AOL to combat the enormous volume of virus e-mails bouncing around the internet last week. So far, I have been using the following 2 e-mail addresses to communicate with AOL, [log in to unmask] and [log in to unmask] These have generated responses but have yet to actually get someone to address my problem individually. Just trying to point you in a helpful direction. -Joe Deming -----Original Message----- From: MSU Network Administrators Group [mailto:[log in to unmask]] On Behalf Of John Valenti Sent: Tuesday, September 02, 2003 1:31 PM To: [log in to unmask] Subject: Another AOL spam block message hi, One of my faculty just showed me an AOL bounce message from last Thursday. It says: 554 -(RLY:B1) The information presently available to AOL indicates this server is generating high volumes of member complaints from AOL's member base. Based on AOL's policy //www.aol.com/info/bulkemail.html AOL may not accept further e-mail transactions from this server or domain. For more info, see http://postmaster.info.aol.com. He had sent about 5 individual messages to AOL accounts describing one of our seminars. But he only received one bounce message. I'm trying to figure out what might be happening ... is maybe just one of AOL's mail servers "misconfigured" and blocking MSU traffic? Seems like he should have received 5 different bounce messages. Oh, this was from Pilot. -John PS - I see that it's possible to upgrade to mail.msu.edu again (at least Step one pops up). Any official word on this? Personally I had moved back to Pilot, but switched back to mail last week since my Pilot inbox was full and I figured I would give the new hardware a chance.