Also if you enable logging of your smtp interface events (to maximum or so) your event viewer should give you a pretty good picture of who is connecting to your exchange and otheer usefull infor for troubleshooting -----Original Message----- From: John Tolmachoff (Lists) [mailto:johnlist@xxxxxxxxxxxxxxxxxxx] Sent: Friday, July 09, 2004 9:36 AM To: [ExchangeList] Subject: [exchangelist] RE: Connection limit reached ? Help http://www.MSExchange.org/ Could be a couple of different problems. 1. Some one is relaying through your server and consuming all the SMTP threads available. 2. There are sessions stuck open. 3. Disk space. 4. Maximum database size. 5. DOS attach. 6. Server is relaying out lots of virus messages from internal computers. There are probably a few more. John Tolmachoff Engineer/Consultant/Owner eServices For You -----Original Message----- From: Johnny Yeo [mailto:johnny@xxxxxxxxxx] Sent: Thursday, July 08, 2004 9:55 PM To: [ExchangeList] Subject: [exchangelist] Connection limit reached ? Help Hi All, When I try telnet into my Exchange server at port 25, I got this error message: 421 ecxhange.domain.com connection limit reached I am using Windows NT4 and Exchange 5.5. Currently I cannot receive any mail. Please advise. Best Regards, Johnny Yeo Malaysia ------------------------------------------------------ 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 ------------------------------------------------------ Other Internet Software Marketing Sites: World of Windows Networking: http://www.windowsnetworking.com Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSEXchange.org Discussion List as: naboths@xxxxxxxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist