How open lab Exchange 2013 to send and receive over the internet

To setup the Send Connector follow this steps: http://exchangeserverpro.com/configuring-outbound-mail-flow-in-exchange-server-2013/

It isn't called out in the article above but if you haven't considered it you will need to allow port 25 (SMTP) traffic to/from the Exchange server through any firewalls you have in place.

Also for inbound email flow you will need to create an MX record in the internet DNS zone for the domain name you wish to receive emails on.

http://www.petri.co.il/configure_mx_records_for_incoming_smtp_email_traffic.htm

So this is where I'm confused a bit.

I named my domain in AD 1234.com, I have an account with dyndns and have a different hostname configure there and told it to use mail routing to my 1234.com.


it doesn't route the email to the exchange from outside. So what am I missing?

thanks

You would need to create DNS,Mx and A Record, and configured properly. so that you can send and receive internet (external domain) mails also.

Thanks

The Active Directory domain and the external or internet domain you can receive email on are different. You can only receive emails over the internet for domains that you own or have control over the DNS records. Internet email flow is controlled by mail exchange (MX) records.

If you perform an nslookup against google.com for example you can see they have MX records for their email servers.

 DNS server handling your query: 8.8.8.8
 DNS server's address:	8.8.8.8#53
 
 Non-authoritative answer:
 google.com	mail exchanger = 10 aspmx.l.google.com.
 google.com	mail exchanger = 30 alt2.aspmx.l.google.com.
 google.com	mail exchanger = 20 alt1.aspmx.l.google.com.
 google.com	mail exchanger = 50 alt4.aspmx.l.google.com.
 google.com	mail exchanger = 40 alt3.aspmx.l.google.com.
 
 Authoritative answers can be found from:

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If you perform the same nslookup against your dyndns domain what do you get?
1. Browse to http://www.kloth.net/services/nslookup.php
2. Enter your dyndns domain
3. From the dropdown menu select MX

I did the nslooup from the site and got:

DNS server handling your query: localhost
 DNS server's address:      127.0.0.1#53
 
 Non-authoritative answer:
 xxxxxxx.dyndns.org       mail exchanger = 10 xxxxx.com.
 
 Authoritative answers can be found from:

Another question. I have my home exchange set as @1234.com and my dyndns hostname is 1111.dyndns.org.

Will this not work since the names are different. This is were I lack the knowledge on setting this up.

Thanks

I was using 1234.com and an example. So to receive and send email I would need to register my domain that I created when setting up the DC and exchange?