How are you? Thank you for your help in advance.
Here is my situation. I have two exchange servers, each has its own Active
Directory (for testing purpose). The servers are using NAT (from private to
public). They both exist in a same private network address scheme. Both DNS

Hoping someone here can help as I am at my wits end!!!!
I am running a active/passive exchange 2003 cluster. Up until 2 days
ago our server would generate and send NDR's to external recipients who
sent an email to our domain with a invaild email address.

We have exchange 2000 and 2000 DC. We are able to send mails to any domain
except yahoo.com and HP.com!!
When i see the cached DNS lookup it shows "MX" entry for every domain other
than yahoo and hp.

I have a header from one message that was sent back.
Microsoft Mail Internet Headers Version 2.0
X-iHateSpam-Checked: Scanned by iHateSpam Server Edition. (5)
From: <postmaster@xxxxxx.xxx>

I've been doing some testing with Exchange Server 2003 talking to other
(non-Microsoft) MTAs and have observed some unexpected behaviour.  If
you enable TLS on a virtual server then it only will only talk to
servers offering STARTTLS (which is expected), but it doesn't seem to

I'm in the process of migrating our Exchange to 2K3. I first built a ne
2K3 server in same org/admin group/domain as our 2K server. All looke
good until I moved my mailbox to the 2K3 server. Mail bound for tha
mailbox, as well as NEWSERVER-IS@DOMAIN.SUFFIX, just sat in a queu

I have recently added a second Exchange 2000 server to a clients 2000
domain. I have now added my first test client to this new server who can't
receive mail from internal or exteral senders.  Outbound mail from this
client is fine, but again replying to it gets the above SMTP ...

We have a user that is getting this error message (see below) when he tries
to send to a particular e-mail address.  The odd part is that I don't have a
problem sending to that address.  We haven't changed anything on our end and
on previous occations we've found out that nothing ...

DEAR ALL,
i made my network as the following :-
 1.one ( DC) win Advanced server 2000
 2.one exchange server 2000 - enterprise edition-.

Message was sent to Employee One from Employee Two. The message was sent
between two users on the same mailbox cluster. The environment has been
Exchange 2003 fully native for over a year. Previously, we had all Exchange
5.5 servers in the environment and used ADMT to migrate ...

I have a site running Exchange 2000.   They want most users to have limits
set on the max size email that can be sent out via SMTP, while select users
are to have no such limitations.
I have set up two SMTP connectors. One, General has a limit of 300K. (This

I have a Windows 2000 Server with Exchange Server 2000, runnig in my LAN,
with internal IP (192.168.1.1). This server is used to send external e-mails.
I don't use the SMTP from the my ISP.
The mails is sent no problem. But in a few cases, the mails return with NDR

Wondering if anyone can help me pls.
I have installed 2 Exchange 2000 SP3 servers on M/S Virtual Server machines
for testing. They exist in separate admin and routing groups connected by a
RGC.

We are in the process of building a Exchange 2003 FE BE configuration with a
redhat server in front of the FE.  The purpose of the redhat server will be
to filter spam and scan mail for viruses before it transport the mail to the
FE and then BE.  My question is what configuration ...

I have a site where a few users need to receive email for a second domain.
ie, All users have an email address in the form of usera@maindomain.com .  A
few select users also need to recieve email for a second, (or more) domain.
ie, userb@maindomain.com, as well as ...