Thanks for the insight, I think I might have narrowed it down to the firewall. Although no errors show up on it. I'm downloading the trial for system center now and will look into it. Since I could telnet into the server and internal and sending out emails was working, it's still a little baffling. I'll have to monitor smtp traffic on the ISA server to see if I can narrow it down. Dan ________________________________ From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Sarbjit Singh Gill Sent: Wednesday, June 25, 2008 3:28 PM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] Re: Stupid Question This maybe a little more than you expect but please start monitoring your Exchange environment and recording events and logs etc. Use System Center Ops Manager 2007 or System Center Essentials if yours is a small network. Put in Exchange management pack. One of the cool feature is Synthetic Transactions. For example the Mail flow Synthetic Transactions would basically a test email is sent periodically to test email functionality. There are two rules for this monitoring. The first rule is an internal Mail flow connectivity and the other rule is the external Mail flow connectivity monitoring. /Sarbjit From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Dan Crain Sent: Wednesday, June 25, 2008 12:25 PM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] Stupid Question I had an issue this morning where internal email was working fine, external emails where being received but receiving external emails weren't getting through. Telnet worked fine to the server from the outside (although if you sent an email it never made it to exchange) so I didn't think it was an ISA server issue with a rule but I restarted both servers just to be sure and when they came up everything worked fine. First question is: Why did this happen? 2nd around here is, what happened to the emails, did they goto la la land? #3 is what can I do about this to reassure people they get their mail? Can an email be sent to 2 different servers at the same time? Or is the backup exchange just for if the main server is down? Let me know what you think, Thanks, Dan Daniel A. Crain Systems Administrator 201 E. Pine Street, Suite 1200 Orlando, FL 32801 (407) 422-4310 DanC@xxxxxxxxxxxx www.DRML-Law.com <http://www.drml-law.com/> NOTE: The information contained in this message may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this message in error, please notify Dan Crain at DanC@xxxxxxxxxxxx immediately by replying to the message and deleting it from your computer. Thank you.