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How to setup External mail flow

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How to setup External mail flow - 15.Oct.2010 8:53:29 AM

Cagster

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Joined: 15.Oct.2010
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Hi All

Is there anybody ot there who can tell me how to setup mail flow on Exchange 2010.

I have currently setup a new domain and exchange server and got internal mail flowing from my new address book, but now need to undestand how to setup external mail.

I am sure this is an easy thing but I am new to exchange and never done this before.

I understand I need to create an mx record?

If somebody out there is knind to help it would be a great help to me....

Many thanks...

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RE: How to setup External mail flow - 15.Oct.2010 9:18:12 AM

de.blackman

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From: Toronto, Canada
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Mail flow in a nutshell:

In order for someone to send you an email, you need to register a new SMTP domain on the internet DNS. Lets say your company will host emails for the simply.com domain (in other words, your users will have email addresses like user1@simply.com). First thing you will need to do is register an MX record for this domain. An MX record is used to locate the IP address of a mail server responsible for accepting mail for a certain domain. Once your MX record is registered, you will have the IP configured on your firewall. On your firewall you will configure it to port 25 to the Exchange hub transport server. On the Exchange server, you will need to configure a receive connector (this will be used to accept mail from the internet). There is a default receive connector configured by the Exchange installation. In order to send out emails to the internet, you will need a send connector. None exist by default so you have to manually create one.

Obviously, this is a summary but make sure you include antivirus and antispam applications in your mail routing topology. You may also want to consider external virus\spam filtering companies such as postini. All you mail will be directed to them on the internet where it will be scanned. Once verified to be clean, the mail items will then be forwarded to you. Outbound can also be configured in the same route. Hope this helps!

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(in reply to Cagster)

Post #: 2

RE: How to setup External mail flow - 15.Oct.2010 9:28:22 AM

Cagster

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Joined: 15.Oct.2010
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many thanks for your help... I will give that a go...

(in reply to de.blackman)

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RE: How to setup External mail flow - 15.Oct.2010 9:43:36 AM

Cagster

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Joined: 15.Oct.2010
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Something I forgot to ask...

I am trying this all out at home so I can learn more..
Is it possible to set this up using virgin media knowing i dont have a static IP address and using there little routers they give out.. I know that the routers can handle the port 25 forwarding...

Thanks again...

(in reply to Cagster)

Post #: 4

RE: How to setup External mail flow - 18.Oct.2010 3:26:44 PM

de.blackman

Posts: 3542
Joined: 4.Apr.2005
From: Toronto, Canada
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I really don't think it is a good idea to use an ISP that does not provide static IP addresses because once the IP address changes you will not be able to route inbound mail anymore and you will have to manually change the MX record entries on your public DNS.

_____________________________

Ibrahim Benna - Microsoft Exchange MVP
Forum Moderator
Navantis
@IbrahimBenna

(in reply to Cagster)

Post #: 5

RE: How to setup External mail flow - 18.Oct.2010 5:30:32 PM

Jesper Bernle

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Joined: 15.Oct.2007
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quote:

ORIGINAL: de.blackman

I really don't think it is a good idea to use an ISP that does not provide static IP addresses because once the IP address changes you will not be able to route inbound mail anymore and you will have to manually change the MX record entries on your public DNS.

What I have at home to combat

the same situation is:

1. I own my own domain (domain.com)
2. I let DynDNS.com host my external DNS Zone.
3. My Router at home have a built in function to automatically update my external zone at dyndns.com when my IP address changes.

(in reply to de.blackman)

Post #: 6

RE: How to setup External mail flow - 19.Oct.2010 9:07:42 AM

de.blackman

Posts: 3542
Joined: 4.Apr.2005
From: Toronto, Canada
Status: offline

Thats really interesting!! Jesper, what type of router do you have and how did you configure it to update your external DNS zone?

_____________________________

Ibrahim Benna - Microsoft Exchange MVP
Forum Moderator
Navantis
@IbrahimBenna

(in reply to Jesper Bernle)

Post #: 7

RE: How to setup External mail flow - 19.Oct.2010 9:18:35 AM

Jesper Bernle

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Joined: 15.Oct.2007
Status: offline

I use Netgear WNDR3700 and it has a built in function for automatically updating my external DNS provider DynDNS. All you have to do is specify your DynDNS account settings in the software and voila, you're good to go.