Question

Forwarding Email to Another Domain

Asked by: Exchange_Admin

I have been trying to resolve this issue lately with no success. Sorry for the long post. Here is my setup:
MYCOMPANY.COM: Exchange 2003 SP2
COMPANYB.COM: Exchange 2003 (Not sure of the SP)
1. I have a distribution group created in my AD. It has the following email address:
COMPANYC@MYDOMAIN.COM
2. I have also create 2 mail enabled contacts. Their addresses are:
USER3@COMPANYB.COM
USER4@COMPANYB.COM
3. The members of the DL in step 1 are as follows:
USER1@MYDOMAIN.COM
USER2@MYDOMAIN.COM
USER3@COMPANYB.COM
USER4@COMPANYB.COM

Here is my problem:
An outside vendor sends an email to COMPANYC@MYDOMAIN.COM. This email is received by USER1 and USER2 in my domain (as expected). But USER3 and USER4 at COMPANYB.COM does not receive the email.

Troubleshooting steps:
1. I used Message Tracking to track the message. It shows that it came in, was delivered to the users in MYDOMAIN.COM. It also shows that the message was transfered to the email server at COMPANYB.COM.

2. In the Exchange System Manager, I expanded Global Settings and then clicked on Internet Message Formats.
In the right pane was a Default Policy. This policy applied to all domains (*). In the properties of this policy on the Advanced tab, the following is UNCHECKED:
Allow out of office responses
Allow automatic replies
Allow automatic forward
Thinking this could be the problem, I created a new policy that applied only to the COMPANYB.COM domain. In this policy I CHECKED the following boxes:
Allow automatic replies
Allow automatic forward

Now here is a strange part. It seemed to work for 3 days after making this change. Then all of a sudden it quit forwarding the messages to COMPANYB.COM (I had not made any changes at all to Exchange that could have caused it to quit working).

3. I created 2 additional mail enabled contacts. One going to my personal hotmail address and the other going to my personal gmail address. I added these new contacts as members of the DL. When the outside vendor sends an email to the DL every member of the DL receives the message EXCEPT USER3 and USER4 at COMPANYB.COM.

4. I can send emails to the users at COMPANYB.COM by selecting the contacts from the GAL.

5. I have checked with the admin at COMPANYB.COM and he says that they are not blocking the messages. I have also had the users at COMPANYB.COM verify that the messages are not ending up in their Junk Email folders.

I am possibly overlooking something here but for the life of me I cannot figure out what is causing the problem.

Once again sorry for the length of this post. Thanks in advance for any assistance that can be offered.

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Asked On
2006-09-18 at 21:23:40ID21994275
Tags

domain

,

another

,

exchange

,

forward

,

email

Topic

Exchange Email Server

Participating Experts
2
Points
500
Comments
3

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Answers

 

by: redseatechnologiesPosted on 2006-09-18 at 22:00:41ID: 17549229

Hi Exchange_Admin,

I am sure Sembee or someone else will jump in for you anyway, but I thought I would post with something I thought of while reading this.

If the message is actually arriving at companyb.com (as shown by message tracking) then surely the problem isnt yours, right?  What does their message tracking show?

One thing that jumped out is that the message is actually going to be addressed to MYDOMAIN.COM, even when being forwarded to COMPANYB.COM - you know what I mean?  the message will be addressed to yourdl@mydomain.com - which may be adding to the confusion at the other end.

What spam server do they have, have they ANY logs?  Once again, if message tacking says it is gone, it should show up in a log somewhere at the other end

I suppose you could test this theory by creating a test user@mydomain.com, which is delivering a copy to admin@companyb.com - see if THAT goes through

-red

 

by: SembeePosted on 2006-09-19 at 04:39:45ID: 17550788

This smells like someone's antispam is being a little aggressive.

The email headers will show that the email has come from user @ companyA, but will appear to come from the email server for companyB.
If companyC is looking at the header information and possibly scoring on the source server as well, then it may be scored too high.

I agree with Red, if Message Tracking shows that the message was delivered to companyC then the problem is with them - despite what they may say about not blocking the message. It hits their server and is delivered correctly, it is out of your hands.

Simon.

 

by: Exchange_AdminPosted on 2006-09-19 at 05:23:11ID: 17551062

I have also been leaning in the direction of the problem being on  COMPANYB.COM. I am not sure about what anti-spam software they are using (they are not very friendly when it comes to divulging information) but their admin swears that it is not being trapped by anti-spam.

But what confuses me is that I can email these contacts directly by selecting the contact from the GAL and they receive the email. Another thing I tried was to send an email from my Outlook account to this DL. ALL MEMBERS received it. Also it worked for 3 days and then all of a sudden quit.


I am just trying to make sure everything is configured properly on my end before I push this off on the admin for COMPANYB.COM.

Things would be alot easier if the company originating the email could send it to both places. But their program can only send this daily report to one email address. Unless I can get this to work I have to rely on one my users on the DL forwarding it to COMPANYB.COM.

20120131-EE-VQP-002

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