Try to see first if you can send to Gmail to determine if it's a connector issue or that you just cannot send to them. Try sending them via telnet. If you can send, try deleting your Gmail connector and recreating it. Sending email via telnet 1. Find mx server of gmail, nslookup -type=mx gmail.com 2. telnet gmailIP 25 3. helo your domain 4. mail from:you@xxxxxxxxxxxxxx 5. rcpt to:someone@xxxxxxxxx 6. data 7. . 8. . James Chong From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Dhirendra Kumar Sent: Tuesday, September 18, 2007 5:44 AM To: exchangelist@xxxxxxxxxxxxx; [ExchangeList] Subject: [ExchangeList] SMTP Connector problem Dear All, I am facing a problem in my SMTP connector. In brief i have an SMTP connector in that i have in address space Address " * " and cost is " 1 ". Now i have created one new SMTP connector where in address space address is " gmail.com" and cost is "1" it was working fine for few days but now in queues this queue is getting generated "'Messages with an unreachable destination' queue" and there are about 150 mail in it with delivery failure. I have only few users who is going to use this connector. Kindly provide me the solution ASAP Regards Dhirendra Singh