Added Virtual SMTP Server

[djw55]

Hi all,

I recently added a new SMTP virtual server to our only exchange box. Our default SMTP server serves user@abc.com. Which has size limits on recieving messages. So I thought we could add a new virtual server and call it user@xyz.abc.com and have that SMTP VS have no size restrictions on receiving mail. I added a new IP address to the network connection, I added the new SMTP server, and I used the new IP I assigned the adapter. I had my service provider create a new mx record for this new server but still can not recieve external email. Any thoughts?

 

[djw55]

Ok, maybe I did not explain myself clearly enough since exactly 0 of you replied.

I have one domain. ABC.com. We have one exachange server using the default SMTP server that recieves email for our users @ABC.com. Without setting up a child domain I have added a SMTP virtual server. I then had my ISP create an MX record for this new VS which I want to have people send mail to using the address user@XYZ.ABC.com. Is this the correct way to go about it in the first place? I still can not recieve external mail to the @XYZ.abc.com address.

 

[jbud]

This should work. Could we start by verifying external connectivity? From an external host, can you:

telnet xyz.abc.com 25

Also, does the name of the Exchange server happen to be xyz, by any chance?

 

[djw55]

No, the name of the exchange box is mail.abc.int. Our internal domain name space does not match our external name space. I will try the to telnet tonight from an external host.

 

[djw55]

Telnet did not work but I may have been trying it incorrectly.

 

[djw55]

Bueller? Bueller? Anyone?

 

[jaksen112]

or you could have just reassigned restrictions on a per-user basis depending on how many users there are.

first off you need to test the basics, nslookup your mail server (setquerytype=mx) does it exist? can you ping it? (if permitted) attempt to connect via telnet to the ip opposed to name at this point eg: telnet 192.168.1.1 25

if none of the above are true you made a wrong turn somewhere.

"Telnet did not work but I may have been trying it incorrectly."

with the above said, make sure your testing your setup correctly before looking for more answers.

01110000

 

[jbud]

I added a new IP address to the network connection, I added the new SMTP server, and I used the new IP I assigned the adapter.

Can you ping the new IP from another host on your internal network?

What happens when, on your internal network, if you try to telnet to port 25 on the new IP you assigned?

Are you on a private network with a firewall or other device performing NAT?

 

[djw55]

Ok, internally I can telnet to the new ip. I thought about allowing unlimited attachment size to the SMTP server and changing all users limits but that is way to much administration. We are on a private network, but our email is outside the firewall.

 

[jbud]

If the server is responding internally to a telnet to port 25, then I think the issue is with whatever firewall/NAT/port-forwarding device you have in place.

 

[djw55]

The mail server is outside the firewall. I am inside the firewall so I don't think that is the issue.

 

[jaksen112]

from outside the firewall, can you ping the VS by name/ip? perhaps your mx records havent taken effect yet.

01110000

 

[djw55]

I can telnet from outside the firewall.

 

[jaksen112]

http://support.microsoft.com/default.aspx?scid=kb;en-us;q153119

01110000

 

[djw55]

Not sure exactly what that was for becuase I show no internet mail service running in my services. When I did the RCPT TO, I got invalid address.

 

[xirkonax]

If you are able to telnet externally, then have you created an alias record for the xyz. to point the new MX record to?

 

[djw55]

I have not done anything with our internal DNS yet. I have one zone as of right now which is for our internal LAN wich is abc.int. OUr default SMTP server servers abc.com, an obvious change of namespace. so now by adding another SMTP VS with proposals.abc.com I am sure there is a DNS issue somewhere.

 

[djw55]

Ok, I am showing messages in my queue for the new SMTP server so they are getting there. But how do I get them from the proposals.abc.com SMTP server to our abc.int user with the address abc.@proposals.abc.com?