Are you pinging with ip numbers? Have you tried pinging with fully qualified names to see if your DNS is returning the correct results?
Or run NSLOOKUP and see what your DNS shows. Are your clients configured to connect through the DNS Name or the IP Address? IF DNS Name, reconfig one to point to the IP Address and see if that stays online. If it does, most likely you are having some sort of DNS issue. Bob Sadler City of Leawood, KS, USA WAN/Internet Specialist 913-339-6700 x194 Get a Life! Get TWO! Play Second Life! http://secondlife.com/ss/?u=b4ebbfdd6af98a027fa7e89a86c55a68 -----Original Message----- From: Kim Schotanus [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 12, 2003 7:49 AM To: Exchange Discussions Subject: RE: pipe dream or possible BECOMES problems Situation: 5 win2K servers, 2 Domain controllers, Exch2K, SQL2K and Sharepoint on 1 machine, Cisco switches (2950), ... I rebooted all servers, unplugged switches, complete AV checkup What can I do more? I can ping all servers from my workstation without problems/delays Kim -----Original Message----- From: Bob Sadler [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 12, 2003 14:44 To: Exchange Discussions Subject: RE: pipe dream or possible DNS? MBLAST Virus? DOS attack? I'm sure we could just guess all day about this, but perhaps you can enlighten us a bit more about how things are setup, what you have done to diagnose the issue, when did this start, did you make changes to something and then have this start? If you provide clear information, perhaps the experts can help. Bob Sadler City of Leawood, KS, USA WAN/Internet Specialist 913-339-6700 x194 -----Original Message----- From: Kim Schotanus [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 12, 2003 7:35 AM To: Exchange Discussions Subject: RE: pipe dream or possible Does anyone have a clue how it is possible that our network is having severe ups and downs in connectivity. Connections to the AD and exchange are very unstable, we have the latest AV updates (trend), switches are ok, etc... Any clues? Kim _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=& lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=& lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=& lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]