My problem is that my internal mail server sends mail out just fine. It's the IIS SMTP server that is having problems. In particular the bad emails. IIS SMTP seems to not send out the undeliverable reports. They are all stacking up in the badmail directory. Greg Foulks, MCP NewFound Technologies, Inc. http://www.nfti.com Email: greg.foulks@xxxxxxxx Voice: 614.318.5036 Fax: 614.318.5005 -----Original Message----- From: Jim Harrison [mailto:jim@xxxxxxxxxxxx] Sent: Sunday, August 19, 2001 1:29 AM To: [ISAserver.org Discussion List] Subject: [isalist] Re: outgoing mail is hanging http://www.ISAserver.org Per your request: p. 662 states in the "Note" that TCP-53 is required for Exchange and IIS SMTP services to send to the Internet. This is because they use that for MX record lookups. I have personally verified this with packet traces. IIS and Exchange SMTP do indeed use TCP-53 as well as UDP-53 to perform MX record lookups. Jim Harrison MCP(2K), A+, Network+, PCG ----- Original Message ----- From: Kirk Poser To: [ISAserver.org Discussion List] Sent: Saturday, August 18, 2001 6:46 PM Subject: [isalist] outgoing mail is hanging http://www.ISAserver.org I had ISA working with Exchange 2000 just fine, and now, incoming mail is working, but out-going is not. Any suggestions on where to look first to troubleshoot? We did run the mail wizard, and after that all was working. I am not sure what we changed to tie things up. I have Toms book, so if there are specific pages to reference me to, that would be great. Kapt Kirk kaptkirk@xxxxxxxxx ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: jim@xxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ---------------------------------------------------------------------------- Get more from the Web. FREE MSN Explorer download : http://explorer.msn.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: greg.foulks@xxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')