I installed Exchange Server 2010 SP1 on Windows Server 2008 Standard R2. Its a Hyper-V instance. I was able to send / receive emails from my exchange mailbox but after few hours I am only able to recieve the email but all my sent emails are staying in queue. A queue message log is here Identity: server\Unreachable\19 Subject: My Exchange Test Email Internet Message ID: <40DC4B7D8AEE364695BA7CB3AB174F18CDBBF7@server.domain.org> From Address: hassan@domain.org Status: Ready Size (KB): 3 Message Source Name: FromLocal Source IP: 255.255.255.255 SCL: -1 Date Received: 7/10/2011 7:40:10 AM Expiration Time: 7/12/2011 7:40:10 AM Last Error: A matching connector cannot be found to route the external recipient Queue ID: server\Unreachable Recipients: hassan.(removed)@gmail.comNixGurus

Do you have an internet send connector? If so, ensure its set to * for the address space.

Can you please describe this where I can find ? I am sorry but I am totally new to Exchange Server. Also I tested outgoing SMTP from a website mentioned in exchange and following results I got. Performing Outbound SMTP Test The outbound SMTP test was successful. Test Steps Attempting reverse DNS lookup for IP address x.x.x.x. ExRCA successfully resolved IP address x.x.x.x via reverse DNS lookup. Additional Details ExRCA resolved IP address x.x.x.x to host server.domain.org. Performing Real-Time Blackhole List (RBL) Test Your IP address wasn't found on any of the block lists selected. Test Steps Checking Block List "SpamHaus Block List (SBL)" The address isn't on the block list. Additional Details IP address x.x.x.x wasn't found on RBL. Checking Block List "SpamHaus Exploits Block List (XBL)" The address isn't on the block list. Additional Details IP address x.x.x.x wasn't found on RBL. Checking Block List "SpamHaus Policy Block List (PBL)" The address isn't on the block list. Additional Details IP address x.x.x.x wasn't found on RBL. Checking Block List "SpamCop Block List" The address isn't on the block list. Additional Details IP address x.x.x.x wasn't found on RBL. Checking Block List "NJABL.ORG Block List" The address isn't on the block list. Additional Details IP address x.x.x.x wasn't found on RBL. Checking Block List "SORBS Block List" The address isn't on the block list. Additional Details IP address x.x.x.x wasn't found on RBL. Checking Block List "MSRBL Combined Block List" The address isn't on the block list. Additional Details IP address x.x.x.x wasn't found on RBL. Checking Block List "UCEPROTECT Level 1 Block List" The address isn't on the block list. Additional Details IP address x.x.x.x wasn't found on RBL. Checking Block List "AHBL Block List" The address isn't on the block list. Additional Details IP address x.x.x.x wasn't found on RBL. Performing Sender ID validation. Sender ID validation was performed successfully. Test Steps Attempting to find the SPF record using a DNS TEXT record query. The SPF record was found. Additional Details SPF record found: "v=spf1 a mx -all" Parsing the SPF record and evaluating mechanisms and modifiers. The SPF record was parsed and evaluated successfully. Test Steps Evaluating A Record lookup mechanism: "+a" The DNS A record lookup mechanism indicated a positive status. Additional Details The host provided matched the A record mechanism. Host: domain.org, Result: Pass. NixGurus

Never mind. I found it. There was no rule defined in it and I created following rule in it Configuration Summary: Elapsed time: 00:00:00 Default Name: Default Usage: Internet Address spaces: SMTP:*;1 Use domain name system (DNS): True Smart host authentication: None Source Servers: SERVER And my emails are now sending :) NixGurus