Exchange Server 2010 external email receive issues

Hi Guys

I have an Exchange 2010 Server that's not receiving external email but can send external email
As soon as I put it into the DMZ it behaves as it should and when i take it out of DMZ it goes back to not getting external emails. I have forwarded ports 110, 25, 995 to the Exchange Server but this has not made a difference. DNS settings are correct as I have checked this and the MX record is setup correctly. The router that I'm using is Telstra's Netgear v7610

Thanks for your help

Michael
tiemannitservicesAsked:
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suriyaehnopConnect With a Mentor Commented:
I believe that the exchange 2010 that you put on DMZ is a edge role. If i understand correctly, when you put this server on DMZ, you can send email to external and receive email from external

Once, you take it out, you can send email to external but not able to receive email from external, right?

if that a case, when you took edge server role out from DMZ, your hub transport server has send connector set to what smarthost?

Once you took edge server role out from DMZ, your hub transport take a role as receiver email from external. Your have to have to change the NAT instead of pointing to Edge server, you shall point to Hub server.

Your hub server must have receive connector with anonymous enabled.
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AndrewPartnerCommented:
What firewall are you using?

For this instance turn off (just for testing purposes)
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