[isapros] Re: RPC filter - connectivity changed

  • From: "Greg Mulholland" <gmulholland@xxxxxxxxxxxx>
  • To: <isapros@xxxxxxxxxxxxx>
  • Date: Wed, 9 Aug 2006 10:21:21 +1000

RPC filter - connectivity changedin that order :p
  ----- Original Message ----- 
  From: Jim Harrison 
  To: isapros@xxxxxxxxxxxxx 
  Sent: Wednesday, August 09, 2006 10:06 AM
  Subject: [isapros] Re: RPC filter - connectivity changed


  There are issues with Exch and ISA if client connections are abruptly 
terminated that can cause this behavior

  Keep your eyes open for a KB that quotes "RPC" and "Keep-Alive".



  From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx] On 
Behalf Of Jason Jones
  Sent: Tuesday, August 08, 2006 3:26 PM
  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.

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