Go to https://www.testexchangeconnectivity.com/ and do a inbound smtp test and post the results. Does it look like its going to your Exchange server or your hosted provider still?James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

Go to https://www.testexchangeconnectivity.com/ and do a inbound smtp test and post the results. Does it look like its going to your Exchange server or your hosted provider still?James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

I am new in exchange, but in my company we need to use a mail server because the hosting mail is not enough to us. My problem is I need a hosting provider. My hosting provider has my web site, domain, my subdomains, and the webmail and configuration about DNS. I requested to my hosting provider to add a new MX Record with the IP public address of my Server Exchange 2010. In my Server Exchange 2010, I configured the send connectors, so we send email to another domain, for example gmail, yahoo etc. It's work fine. In my OWA, I send email to my users domain, and work fine. So I send a email to mpaz@midominio.com to ale@midominio.com and work fine. The problem is when another domain send me a email. For example is I send email from gmail to mpaz@midominio.com, I have the following message: "Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 550 550 Requested action not taken: mailbox unavailable or not local (state 14)." These error means don't found my mailbox, because in the hosting provider, in my webmail, these mailbox don't exist. So my question is, how to enabled to my exchange server 2010 visible in Internet? Any idea please. MPAZ

Have you tried above suggestions? From your description, you should check the MX record resolution firstly.Jack Zhou - MSFT

are you sure that your MX records are configured to point to your exchange server? check your domain with mxtoolbox.com and see if the IP is the same of your Public IP. Also do the mail from the internet get received by the HUB servers, if so check the allow anonymous on the receive connector.