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how to block recive mail from a user to our domain in exchange 2007





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There are currently no logon servers available to service the logon request

When bringing a new server on line, you may see an error that says: The Security System detected an authenticaton error for the server ldap/xxxxxxxt. The failure code from the authentication protocal Kerberos was "There are currently no logon servers available to service the logon request. Event id: 40960 category: SPENGO (Negotiator) (0xc000005e) This issue is the result of missing or the inability to contact the DNS SRV (SeRVice) records. You just brought a new server on line. To complete the process, the server has to register its own host A record and SVR record in DNS. To do this, Type the following at the command prompt: IPconfig /flushdns IPconfig /registerdns net stop netlogon net start netlogon flushing DNS will remove all old or improper DNS records registering dns records registers your Host A record restarting the netlogon will register your SRV records. __________________________________________________________________________________ Speaking of ...
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test vpn bandwidth and speed with iperf

This article explains how to use a free utility called iPerf to test the speed of a VPN connection. In this example I am running iPerf on windows but there are other versions available (i.e. Linux). Download iPerf from  http://linhost.info/2010/02/iperf-on-windows/ Put a copy on 2 computers with 1 either side of the VPN. In this example I have put in the c:\triangle folder On the “server” PC open a cmd prompt and navigate to the folder containing iperf. Note on computers running Win7 or Win2008 I recommend running the cmd prompt in elevated mode. Run the command  iperf –s On the “client” PC open a cmd prompt and again navigate to the folder containing iperf. Run the command  iperf –c After a short while the estimated bandwidth is displayed.
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Installing the East-Asian language packs

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