Multiple Domains + mail server host greeting name

Morning!

I have an Exchange Server 2003 which hosts 2 email domains (@domainA.com & @domainB.com).  

DomainA is our company's email account and DomainB is our hosted companies email account.  I had a feeling this would happen, when I did a DNS REPORT on it I received a warning that the "mail server host greeting name" is not mis-representing itself, i.e., the greeting host is showing as DomainA's MX record.  I have the proper MX records, mail.domainA.com & mail.domainB.com including proper r-dns records.  Can you "fudge" exchange so that it properly reports both MX records in the mail greeting host??

TIA,

Steve
sdeblockAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

LuisDoBenficaCommented:
Hello,

It seems that your Exchange Server is Internet Front.

You should install a SMTP gateway between Internet and your Exchange server (eq. Linux with Postfix) and modify the MX (on Internet) for all domains you host to point to your SMTP gateway.
0
Lee W, MVPTechnology and Business Process AdvisorCommented:
Came across this recently in a group I'm a part of... not sure if it's what you're looking for:
Under the SMTP Connector go under Properties and on one of those tabs there is an Advanced button revealing a field where you can change the name to mail.yourcustomer.com
0
diepesCommented:
2 email domains (@domainA.com & @domainB.com).  

Quote
>>warning that the "mail server host greeting name" is not mis-representing itself
why NOT mis-representing itself ?  surely you mean mis-representing itself ?

As to the answer.
A mail server can receive email from multiple domains if there mx records point to it.
The solution is NOT to use 2 different dns names for the different domain email servers, but the same

e.g.
For domainA.com    have a mx record    mail.domainA.com
and for domainB.com have a mx record  mail.domainA.com     <<A again.

Both should point to the same domain, and the reverse lookup for the ip should also point to mail.domainA.com

Then the problem is solved.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
sdeblockAuthor Commented:
Thanks for your responses.

It seems as though I have the server created correctly with proper RDNS and MX records.  I was worried that outbound email from DOMAINB would have issues with some mail servers if it was responding with a mail server greeting name of DOMAINA.

Per DIEPES last reponse, that's the exact configuration I have now.

Please let me know if you have any other thoughts - thanks!
0
diepesCommented:
you can read up on SPF  sender policy frame work, that is a way to add dns records for domainA and domainB that appoints your mail server as a legitimate sender for both of these domain.

But is is not used/checked widely by mail servers.

http://www.openspf.org/
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Exchange

From novice to tech pro — start learning today.