Leomar, you should have at least one MX record that points to the public IP address of your ISA server. The server publishing rule should map this external IP with the internal IP of your Exchange server. Mapped server protocol: SMTP server. You can check to see if this is working correctly from a public IP address with: telnet IP_isaserver 25 (your Exchange Server should respond) Other useful utilities on the Internet for troubleshooting: www.network-tools.com <http://www.network-tools.com/> www.dnsreport.com <http://www.dnsreport.com/> -----Original Message----- From: Leomar Lima [mailto:leomar@xxxxxxxxxxxxxxx] Sent: Miércoles, 04 de Septiembre de 2002 08:58 a.m. To: [ExchangeList] Subject: [exchangelist] RES: RE: Exchange behind ISA http://www.MSExchange.org/ Mark, The sender doesn't receive any error mesage!! The e-mail just doesn't arrive!! Thanks Leomar Lima Brazil +55 54 2237844 [Leomar Lima] -----Mensagem original----- De: Mark Fugatt [mailto:mark@xxxxxxxxx] Enviada em: terça-feira, 3 de setembro de 2002 18:07 Para: [ExchangeList] Assunto: [exchangelist] RE: Exchange behind ISA http://www.MSExchange.org/ Leomar Could you post what the actual error message is the sender is getting back? Thanks Mark Fugatt Pentech Office Solutions Inc www.4mcts.com www.exchangetrainer.com Tel: 585 586 3890 Fax: 585 249 0316 Cell: 585 576 4750 Visit www.msexchange.org for valuable information about Microsoft Exchange -----Original Message----- From: Leomar Lima [mailto:leomar@xxxxxxxxxxxxxxx] Sent: Tuesday, September 03, 2002 5:09 PM To: [ExchangeList] Subject: [exchangelist] Exchange behind ISA http://www.MSExchange.org/ Hi I placed my Exchange 2000 server on the intranet, protected by the ISA server, and I created server publishing rules to allow the e-mail server to be published to the internet. The outgoing e-mail works fine, but de incoming e-mail not. What is happenig? Leomar Lima Brazil +55 54 2237844 ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: mark@xxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: leomar@xxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: jedanoviz@xxxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')