Hi all Well we R working With ISA For Along time now We Got Several Of them ( ISA Computers ), We always have Problems (But how's not :-)), But Generally that's a good Product and we Love it ! Now our mail server is connecting throw an ISDN line With Static IP All used to work fine BUT now :-( something got wrong and we have a lot of problems in getting inside mail ( Event 2002 in the Exchange App Log ) If I'll do a restart To the ISDN connection ( disconnect it and then Reconnect it ) It will all work again just fine , except for sometimes I need to restart the ISA Server And Only then I will have Incoming mail's again . Did Anyone have a clue ? the DNS is on another server and working just fine I don't Problems in sending mail and I cant find anything wrong with the ISA Configuration . maybe it's an Exchange Prob ? Help ? ! Eran Levi