My Isa box has a connection to a dedicated T1. There is no DSL or Cable Modem. I use External DNS servers provided by my ISP. DNS resolution is not a problem, when this issue happens my users are still able to hit the internet. It is just ISA not allowing SMTP inbound to happen. Like Kevin said, there is no pattern to it, and there is nothing to show in the Event Logs that this has happened. We have to just monitor email here to make sure it is flowing inbound. I do receive a lot of inbound email, my guess is that we are just overloading ISA, or we are being attacked on that port. -----Original Message----- From: Kevin S. Malinowski [mailto:Kevin@xxxxxxxxxx] Sent: Wednesday, May 28, 2003 12:28 AM To: [ISAserver.org Discussion List] Subject: [isalist] Re: ISA Server SMTP Issue http://www.ISAserver.org Hi, Tom. Thanks, that is what I am doing right now, but running it once a day at 1 am, other than that I depend on the lack of SPAM to alert me that the server needs a manual restart. I never thought that I would actually have a use for SPAM. :) Kevin -----Original Message----- From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxxxxxxxxx] Sent: Tuesday, May 27, 2003 11:25 PM To: [ISAserver.org Discussion List] Subject: [isalist] Re: ISA Server SMTP Issue http://www.ISAserver.org Hi Kevin, Several ways to do it. How about a batch file with the following: net stop ipnat /y net start "microsoft firewall" And then schedule it to run every few hours. There may be more elegant ways, but it works :-) HTH, Tom Thomas W Shinder www.isaserver.org/shinder ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp -----Original Message----- From: Kevin S. Malinowski [mailto:Kevin@xxxxxxxxxx] Sent: Wednesday, May 28, 2003 12:22 AM To: [ISAserver.org Discussion List] Subject: [isalist] Re: ISA Server SMTP Issue http://www.ISAserver.org Hi, Tom, It is a 7 MB DSL connection, although there is a modem in the box, it is not configured as an interface in ISA. This one truly has me stumped as well. I thought it was only us, but when Mark's post came up today it got me digging again. Any suggestions as to the best method to schedule a restart of the ISA services on a regular basis? Kevin -----Original Message----- From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxxxxxxxxx] Sent: Tuesday, May 27, 2003 11:10 PM To: [ISAserver.org Discussion List] Subject: [isalist] Re: ISA Server SMTP Issue http://www.ISAserver.org Hi Kevin, Darn. My only other guess is that maybe you're using a dial up connection. Tom Thomas W Shinder www.isaserver.org/shinder ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp -----Original Message----- From: Kevin S. Malinowski [mailto:Kevin@xxxxxxxxxx] Sent: Wednesday, May 28, 2003 12:08 AM To: [ISAserver.org Discussion List] Subject: [isalist] Re: ISA Server SMTP Issue http://www.ISAserver.org Hi, Tom. Our public DNS is hosted offsite. We have a split DNS implementation. Kevin -----Original Message----- From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxxxxxxxxx] Sent: Tuesday, May 27, 2003 7:15 PM To: [ISAserver.org Discussion List] Subject: [isalist] Re: ISA Server SMTP Issue http://www.ISAserver.org Hi Kevin, Are you publishing your public DNS servers? Thanks! Tom Thomas W Shinder www.isaserver.org/shinder ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp -----Original Message----- From: Kevin S. Malinowski [mailto:Kevin@xxxxxxxxxx] Sent: Tuesday, May 27, 2003 11:58 AM To: [ISAserver.org Discussion List] Subject: [isalist] Re: ISA Server SMTP Issue http://www.ISAserver.org Hi, Mark and Jim. I have an ISA server that the same situation occurs on. Currently the box is Windows 2000 Adv Server SP3, ISA SP1 with the NAT hotfix applied. There are 3 separate internal SMTP servers published on three separate external IP's. (none of the external IP's are in the LAT) The same situation occurs, where no external SMTP traffic is received by any of the internal SMTP servers until the ISA services are restarted. Their appears to be no recoginizable pattern as to when this will occur. It may happen twice this week, then not again for two weeks. Nothing is in the event logs and nothing seems to be noticable in perfmon. The internal SMTP servers are 2 GroupWise (GWIA) and 1 Exchange 2000. Kevin -----Original Message----- From: Kingery, Mark [mailto:Mark.Kingery@xxxxxxxxxxxxxx] Sent: Tuesday, May 27, 2003 7:30 AM To: [ISAserver.org Discussion List] Subject: [isalist] Re: ISA Server SMTP Issue http://www.ISAserver.org There is nothing in the Event logs, My ISA sever is SP1 and FP1. This does not affect any other services, all users are able to access the internet through the ISA server. It just seems to be the SMTP inbound. -----Original Message----- From: Jim Harrison [mailto:jim@xxxxxxxxxxxx] Sent: Tuesday, May 27, 2003 8:16 AM To: [ISAserver.org Discussion List] Subject: [isalist] Re: ISA Server SMTP Issue http://www.ISAserver.org What do you find in the event logs? What is your ISA fix level? Jim Harrison MCP(NT4, W2K), A+, Network+, PCG http://isaserver.org/Jim_Harrison/ http://isatools.org Read the help / books / articles! http://www.ISAserver.org I have configured on my ISA server a Server publishing rule for SMTP on port 25, this has been working without any issues for 18 months, until recently about the last 4 weeks, the ISA server will stop accepting SMTP mail. The only way for me to fix this is to stop and start all ISA services. Nothing has changed on the ISA server. Anyone have any ideas for my issue? Thanks Mark My server is Windows 2000 SP3 ISA Server FP1 ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Exchange Server Resource Site: http://www.msexchange.org/ Windows Security Resource Site: http://www.windowsecurity.com/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: jim@xxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: 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Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 Exchange Server Resource Site: http://www.msexchange.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: kevin@xxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 Exchange Server Resource Site: http://www.msexchange.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: tshinder@xxxxxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 Exchange Server Resource Site: 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