New Installation of SBS2008, Can send email utilizing Exchange, cannot receive.


I have a new SBS2008 installed and setup to be able to access from the Internet.  I used all wizards to connect to the Internet and setup your Internet address.

I have a firewall on the front of the network that is port forwarding.  I have setup SMTP port forwarding for port 25 to the server.

Here is the status:

I can send from Exchange to any public email address.  My MX records are setup and resolving correctly.  I am not on any blacklists.

I cannot receive any mail.  I thought it might be the firewall, so I got on the local LAN and performed a telnet on port 25.  

Error received:
Connecting To not open connection to the host, on port 25
: Connect failed

Microsoft Exchange Transport is installed?  Thoughts?  I am at a loss ATM.

Thank you,
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I assume that internal clients can send each other mails

Check the windows firewall for the port 25

check the default receive connector in Ex under Server Config => Hub
ipaddress rang and if you what to receive from the internet mail you must enable anonymous user on the receive connector

I would not recommend receiving mails from the Internet directly to your exchange.
Best would be a relay or use a pop connector (not the SBS)

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shaw71Author Commented:

Thank you, I manage a client of mine's network.  He also makes changes on his own.  I went into the Hub and found that the SMTP requests were only received on IP address NOT  So I changed it and now the server receives requests on port 25.  THANK You,

Now when I email, I get a reject from the server saying :
Delivery to the following recipient failed permanently:

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 5.1.1 User unknown (state 14).

What would recommend?  I contacted the client.  So he connected the wrong port on the back fo his server after a time he shut it down.  Couldn't connect and ran the wizards...UGH, definately will make sure he doesn't do that again.  

I would assume if I run the wizards again, everything will go back on track...thoughts?

Thank you for your help above it identified the issue for me to start asking the client what happened.
how is the mailflow configured
are you using a smarthost or directly to mail domains through MX?

To identify the setting check the send connector under organization config => hub => send connectors

do you receive the reject NDR only for one user / domain or all outgoing mails?

Do you mean the SBS wizard for internet connection, internet address or configure a smart host?

for a proper mailflow on outgoing mail I recommend using a smarthost
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