I have a strange issue.
Windows server 2008 Std
Exchange 2007 SP2
I work for a International company.
I am located in the Netherlands. there is a company in Belgium with the same name but own domain.
There is NOT a trust relation between our sites.
When I send a message from company.nl to company.com i receive an NDR message that the user isn't in the .nl server uh? yes. instead of trying to send to the .org he try to send it to the .nl domain. our own domain.
before the . (dot) the company name is identical.
I have a feeling that DNS is making some mistakes.
Sometimes the message will arrive. but mostly not.
The NDR message we receive from our server.
IMCEAEX-_O=BDV_ou=First+20Administrative+20Group_cn=Recipients_cnemail@example.com (while we send to .org)
#550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ##
What i've tried is to create a DNS zone for the .org domain. i created an A record (blank) and filled in IP of there mailserver. but then i receive the message:
ns1.xxxxx.be #554 5.7.1 <firstname.lastname@example.org>: Relay access denied ##
(they won't add our IP to allow relaying)
what am i doing wrong? or how can i solve this issue.
Many thanks in advance.