What do I change in DNS after changing SMTP Virtual Server name?

What do I change in DNS after changing SMTP Virtual Server name?

Post by Rick » Sat, 26 May 2007 03:01:53


I have a registered domain name .com. The MX record points to my
public IP, goes through my PIX, NATs, goes to my Barracuda and then to
my main office exchange 2003 server. Have a second office, in the
same domain with an exchange server. I have a routing group setup so
that all mail comes back to the main office and leaves from there. My
internal domain is different then my registered, ending in .local. I
want to change the default SMTP virtual server name to
mail.registereddomain.com (from servername.internaldomain.local), but
when I do, people in my branch office can not send mail externally.
It comes back <branchofficeservername.internaldomain.local #5.5.0 smtp;
550 < XXXX@XXXXX.COM >: Recipient address rejected: No such domain at
this location. Internal mail flows fine. Users at the main office
have no problem with internal or external mail. I am pretty sure that
it is just a DNS entry that needs to be added or changed, but I
haven't been able to find anything more specific in my searches.
Hopefully someone can help me out with some specific instructions on
what I need to do in my DNS. I tried adding an A record of
mail.registereddomain.com to my forward look up zone, but that did not
work. Can someone tell me more specifacally what record and where it
needs to be placed to fix this?
 
 
 

What do I change in DNS after changing SMTP Virtual Server name?

Post by Ed Crowley » Sat, 26 May 2007 03:41:39

You need two routing groups and a routing group connector to connect the
two. In each routing group, you need an SMTP Connector that directs
outbound ("*") mail to the appropriate server.
--
Ed Crowley
MVP - Exchange
"Protecting the world from PSTs and brick backups!"

 
 
 

What do I change in DNS after changing SMTP Virtual Server name?

Post by Ed Crowley » Sat, 26 May 2007 03:48:07

My other post about routing groups and SMTP Connector is most of your
answer. I'd bet your Yahoo! Mail bouncing is due to reverse DNS lookup.
DNS entries for your servers really doesn't have much to do with outbound
mail. You do, however, want to be sure that you have an SRV record so that
your corresponsendts' antispam measures don't bounce your mail on that
basis. That could be what Yahoo is bouncing.
--
Ed Crowley
MVP - Exchange
"Protecting the world from PSTs and brick backups!"
 
 
 

What do I change in DNS after changing SMTP Virtual Server name?

Post by Rick » Sat, 26 May 2007 04:03:09

On May 24, 1:48 pm, "Ed Crowley [MVP]" < XXXX@XXXXX.COM >




I have a corresponding PTR record out there for
mail.registereddomain.com. The mail is never making it to Yahoo to
bounce. Have never had a problem with outgoing mail until trying to
change the STMP virtual server name to match the MX record out on the
net. Are you talking about a SRV record in my domains DNS which would
be for mail.registereddomain.com?
So set up two routing groups. One with the main office server in it
and the other group with the branch office in it. Set up a routing
group connector so the two can send mail to each other. Also make
SMTP routing group connectors that point "*" to the main office
server. So in the main office routing group the SMTP connector will
point to itself?
 
 
 

What do I change in DNS after changing SMTP Virtual Server name?

Post by Ed Crowley » Sat, 26 May 2007 04:17:40

he SMTP Connector has a setting for the bridgehead server, which defines
the server that routes the mail from the routing group to the Internet. If
you have just one server, then that is the server that is the bridgehead.
--
Ed Crowley
MVP - Exchange
"Protecting the world from PSTs and brick backups!"

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