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OWA Is up *most of the time*

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OWA Is up *most of the time*

ilokotkin
hey guys, here is a weird issue we are having. owa 2003 is a front end server with 2 backends.
i remote desktop to home from work to monitor the status of it via ping.
for the most part pings come by fine, however there are maybe a few times every hour where for 2-3 minutes the mail server becomes unpingable, hence no OWA.
the mail server obviously has 2 nics, 1 directly outside via firewall, and 1 internal.
Through one of these "bumps" i logged into the firewall and was able to ping both interfaces of the mail server and outside to my home pc, but not backwards.
whats happening here?
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    jpeoples

    Couple of questions about your configuation. Does your firewall have a DMZ or are you using NAT for the public address of the front end server? Do you have a standing ping running to the Mail Svr? If so how long has that ping been running, i.e. do you keep it up all the time or do you only turn it on when you're having problems? Do you have logging turned on in your firewall? If so is anything being reported there? Have you tried doing a trace in either direction? While the server is in accessable ask one of your friends to send you mail using another ISP or a web mail provider. Check to see if the server receives the message during that time. Most firewalls have a default configuration that prevents pinging the unsecure interface because of DoS attacks yours might be seeing the standing ping as such. Let me know if you need more help.

  • +
    0 Votes
    jpeoples

    Couple of questions about your configuation. Does your firewall have a DMZ or are you using NAT for the public address of the front end server? Do you have a standing ping running to the Mail Svr? If so how long has that ping been running, i.e. do you keep it up all the time or do you only turn it on when you're having problems? Do you have logging turned on in your firewall? If so is anything being reported there? Have you tried doing a trace in either direction? While the server is in accessable ask one of your friends to send you mail using another ISP or a web mail provider. Check to see if the server receives the message during that time. Most firewalls have a default configuration that prevents pinging the unsecure interface because of DoS attacks yours might be seeing the standing ping as such. Let me know if you need more help.