Yes, it is. Please - call them. It's the only way you can address this issue. I'd love to hand you the patch, but I can't. ------------------------------------------------------- Jim Harrison MCP(NT4, W2K), A+, Network+, PCG http://isaserver.org/Jim_Harrison/ http://isatools.org Read the help / books / articles! ------------------------------------------------------- -----Original Message----- From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx] On Behalf Of Jason Jones Sent: Tuesday, August 15, 2006 15:37 To: isapros@xxxxxxxxxxxxx Subject: [isapros] Re: RPC filter - connectivity changed Ori/Jim, Bit more info from testing today: Created connectivity verifiers late last week for all exchange back-end servers and was onsite today when the RPC filter failed again. Symptoms Basically what happens is that for no apparent reason all MAPI clients lose access to Exchange and ISA logs repeated alerts saying "RPC filter - connectivity changed". Accompanying these ISA logs, the application logs says "unable to connect to ExchangeIP:135 connection failed" quickly followed by "Connection to ExchangeIP:135 connection restored". These errors loop to say connected then disconnected. Every time you start a MAPI client and try to access Exchange more and more ISA alerts are created and more and more application errors are generated. During all this time, the RPC connectivity verifiers show good connectivity to all Exchange servers. Looking at the ISA logs, I traffic being logged as allowed, but every connection seems to be followed by an instant "0x80074e24 FWX_E_CONNECTION_KILLED" entry. Workaround/Current Fix If you restart the firewall service on all array members then MAPI clients can successfully connect to Exchange and continue working until the filter fails again. Sometimes this is a few hours, sometime this is a few days. These system is currently only in pilot so only has <15 users at the moment, so shouldn't be due to RPC filter load issues. Is this another PSS call in the making? :-\ Any more ideas??? Cheers JJ ________________________________ From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx] On Behalf Of Ori Yosefi Sent: 09 August 2006 07:39 To: isapros@xxxxxxxxxxxxx Subject: [isapros] Re: RPC filter - connectivity changed It does indeed sound strange. I haven't heard of such a problem before, so I don't have any recommendations how to fix it. I would recommend that you add a connectivity verifier, if possible, to the server. You can see if when you get the RPC alert you also get a connectivity alert. It may provide some hints. I would also suggest contacting PSS to get someone from Microsoft investigate it. HTH, Ori. ________________________________ From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx] On Behalf Of Jason Jones Sent: Wednesday, August 09, 2006 1:26 AM To: isapros@xxxxxxxxxxxxx Subject: [isapros] Re: RPC filter - connectivity changed Thanks Ori - kinda how I expected the alert to be. I get the ISA alerts 2/3 times every couple of weeks and lots of event log errors, saying "RPC server available", then "RPC server unavailable" in a complete loop. The only way to solve the issue is to reboot all array members - ouch! Whilst ISA is in this state all existing MAPI clients remain working, but all new sessions fail. However, I can see no reason why the Exchange server (the RPC published server) should suddenly appear unavailable - I also cannot see why the destination server is at fault if a reboot of ISA fixes the problem. Kinda feels like ISA is getting confused to me :-\ JJ ________________________________ From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx] On Behalf Of Ori Yosefi Sent: 08 August 2006 18:23 To: isapros@xxxxxxxxxxxxx Subject: [isapros] Re: RPC filter - connectivity changed This alert is issued when a published RPC server has gone offline / came back online. When attempting to establish a connection with the RPC server, if the connection attempt fails (for the first time) then this alert is issued. Later on, when a connection attempt is successful (for the first time) then this alert is issued again. HTH, Ori. ________________________________ From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx] On Behalf Of Jason Jones Sent: Tuesday, August 08, 2006 8:10 PM To: isapros@xxxxxxxxxxxxx Subject: [isapros] RPC filter - connectivity changed Hi, Anyone seen the "RPC filter - connectivity changed" ISA alert? Under what scenario does this get trigged? Is this an ISA problem or an indication that the published RPC server is at fault? Cheers JJ <<rpc filter.JPG>> All mail to and from this domain is GFI-scanned.