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Delayed email to Distribution Lists in domain

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Delayed email to Distribution Lists in domain - 13.Aug.2008 12:27:17 PM   
Conagher

 

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I have (2) Exchange 2003 Email Servers (1 front end, 1 back end) running on Windows 2003 Server SP1, and I'm running Exchange 2003 on SP2.

We only have one domain in our network, but we do have a few users that are on non-domain computers, that do reside within our network. The users that are using non-domain computers, do have active AD accounts and separate contacts in AD so that they can receive email to their non-domain email accounts on their computers from the domain users in our network.

The problem we are experiencing is when one of the users on one of the non-domain computers sends an email to one of our Global Distribution Groups(which only has domain users listed in it), the email either takes forever to get received by the recipients in the global distribution group, or it doesn't get delivered at all. It does this with more than one distribution group, and I've even deleted the old global distribution groups and re-created them, but that didn't help resolve the issue. I even deleted one global distribution group and recreated it as a universal distribution group, but it didn't solve the problem either.

I've seen errors like Status: 4.4.7 mostly if that helps with any troubleshooting.

I'm no Exchange Email guru, so I hope that knowledgable people here can help me fix the problem.

Thanks,
Doug

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RE: Delayed email to Distribution Lists in domain - 13.Aug.2008 1:55:18 PM   
Sembee

 

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What does message tracking say?
How do these non-domain users send email ? SMTP, MAPI (native Outlook), something else?

Simon.

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(in reply to Conagher)
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RE: Delayed email to Distribution Lists in domain - 13.Aug.2008 5:13:44 PM   
Conagher

 

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Message tracking was not enabled from the tech that installed Exchange 2003 on the servers.

The non-domain users use their own Outlook on their computers (laptops) to send SMTP email to the distribution groups on our domain.

This is my first Exchange Email environment and I'm still learning what I can about Exchange - basically on the fly so-to-speak.

Thanks,
Doug

< Message edited by Conagher -- 13.Aug.2008 5:15:23 PM >

(in reply to Sembee)
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RE: Delayed email to Distribution Lists in domain - 13.Aug.2008 6:05:59 PM   
Sembee

 

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I would suggest that you enable Message Tracking. Without it you have no idea what Exchange did with the message. It might have been stopped by AV, it could be blocked by a rule or something else. However at the moment you do not know.

Simon.

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RE: Delayed email to Distribution Lists in domain - 13.Aug.2008 6:55:52 PM   
Conagher

 

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I just enabled message tracking on both Exchange Servers, so hopefully I'll see something in the logs when this happens again.

I see some stuff in the log on my back end server, but is Notepad the best thing to use to view the log? The text looks kind of crammed together and makes it hard to read.

< Message edited by Conagher -- 13.Aug.2008 7:01:42 PM >

(in reply to Sembee)
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RE: Delayed email to Distribution Lists in domain - 14.Aug.2008 1:24:29 PM   
Conagher

 

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Here's a question for you....

When a non-domain user wants to send an email to a distribution group on my domain, can they effectively just type the email address of the distro group and send the email that way, or do they have to pick the distro group from the Global Address List?

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RE: Delayed email to Distribution Lists in domain - 14.Aug.2008 6:32:27 PM   
Sembee

 

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As long as the address has a valid SMTP address and does not have any restrictions on who can send to it (authenticated users for example) then you can send to it by just entering the email address.

Simon.

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In the UK? Hire me: http://www.sembee.co.uk/
Exchange Resources: http://exbpa.com/

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Post #: 7
RE: Delayed email to Distribution Lists in domain - 25.Aug.2008 1:56:18 PM   
Conagher

 

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Could the delay in the email being sent to the Dist List be a DNS error of some sort? If so, how would I troubleshoot DNS and Exchange to see if the problem lies between them?

Thanks.


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RE: Delayed email to Distribution Lists in domain - 25.Aug.2008 2:04:29 PM   
Sembee

 

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If you had a DNS issue then it would affect all operations of Exchange.
The only possible cause I can think of is that the server being used to expand the distribution list is remote or under heavy load.

Simon.

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Blog: http://blog.sembee.co.uk/
Web: http://www.amset.info/
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Post #: 9
RE: Delayed email to Distribution Lists in domain - 25.Aug.2008 2:06:17 PM   
Conagher

 

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The front end mail server in is our DMZ which is on the other side of our PIX firewall.

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RE: Delayed email to Distribution Lists in domain - 25.Aug.2008 2:14:25 PM   
Sembee

 

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quote:

ORIGINAL: Conagher

The front end mail server in is our DMZ which is on the other side of our PIX firewall.


That would be a problem.
Whatever your reason for putting the frontend server in the DMZ, I can guarantee that it is wrong or misguided. Frontend servers do not belong in the DMZ. No one has yet to give me a good reason why one should be placed there, but I can give you many reasons why they shouldn't. If you think it has improved your network security then you are hopelessly misguided.

I wrote this two years ago.
http://www.sembee.co.uk/archive/2006/02/23/7.aspx

Simon.

_____________________________

Simon Butler,
Exchange MVP
Blog: http://blog.sembee.co.uk/
Web: http://www.amset.info/
In the UK? Hire me: http://www.sembee.co.uk/
Exchange Resources: http://exbpa.com/

(in reply to Conagher)
Post #: 11
RE: Delayed email to Distribution Lists in domain - 25.Aug.2008 3:12:58 PM   
Conagher

 

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Well at least I can say that I didn't do it....lol

It was setup that way when I was hired with the company I work for.



(in reply to Sembee)
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RE: Delayed email to Distribution Lists in domain - 25.Aug.2008 3:56:38 PM   
Sembee

 

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The fact that it was like that when you started doesn't mean it was correct. The person who set it up could have been incompetent and didn't have a clue what they are doing. Before I started working for myself, every job I had been in I ended up rebuilding the network because it was in such a shocking state.

I would suggest that you bring the frontend server inside the firewall, and then close the holes in the firewall. You only need two ports open for most sites - SMTP (25) and 443 (HTTPS).

Simon.

_____________________________

Simon Butler,
Exchange MVP
Blog: http://blog.sembee.co.uk/
Web: http://www.amset.info/
In the UK? Hire me: http://www.sembee.co.uk/
Exchange Resources: http://exbpa.com/

(in reply to Conagher)
Post #: 13
RE: Delayed email to Distribution Lists in domain - 25.Aug.2008 7:05:55 PM   
Conagher

 

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Simon,

I really appreciate your knowledge and time with helping me with this Exchange problem I have in my domain.

A friend of mine at work said that he has seen a Front-End Exchange Server (with dual NICs) setup as a dual home setup with 1 NIC card in the DMZ and then the other NIC inside the firewall. Would this be of any benefit to do it this way?

Just letting you know what I hear of from people at work. Like I stated before, I'm really new at Exchange Email and can use all the help I can get.

Thanks very much,

Doug

(in reply to Sembee)
Post #: 14
RE: Delayed email to Distribution Lists in domain - 25.Aug.2008 7:11:08 PM   
Sembee

 

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Dual home an Exchange server? Bad idea - you have just bypassed the firewall - making it close to useless. Once you have finished with your firewall, use it as a doorstop, that it is all it is good for once you have a dual homed domain member.

It doesn't matter which way you spin it, an Exchange server should not be in a DMZ. End of story.

Simon.

_____________________________

Simon Butler,
Exchange MVP
Blog: http://blog.sembee.co.uk/
Web: http://www.amset.info/
In the UK? Hire me: http://www.sembee.co.uk/
Exchange Resources: http://exbpa.com/

(in reply to Conagher)
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