We have a single AD domain environment.  We have split-brain DNS: internal
W2K DNS servers to support AD and external DNS servers so people can find us
on the Internet.
On the Exchange SMTP Virtual Server properties sheet, on the Delivery tab,

Hi.-
Messages are stuck in the qeue Messages Awaiting Directory Lookup and i need
to restart my exchange server for the messages been delivered. How can I
troubleshoot this problem?

I have only one Exchange2k server. Approximately since two
weeks ago it started rejecting inbound traffic from
several domains. The NDR message the sender receives is
regularly similar to the following: "550 5.7.1. Requested

Running 2003 SBS. I have the following problem:
Can telnet to the IMAP server.
Can create a new user, setup IMAP for the mail, all works ok.
Current users (all created when imported via the import wizard from a

Hi.- I have a problem sending mail to one domain. I receive a Delivery Status
Notification (Delay), but sometimes the mails arrives succesfull and
sometimes I get this message. Dns is right, I telnet to the destination
server's port 25 and OK. I need help please. These are the ...

First - I hope I'm posting this to the correct group.  That said, here
is my scenario.
We've got an exchange (2003) backend server sitting on our internal
network.  On the internet connection side, we have two different DMZ's

I'm getting NDRs while sending Email from Exchange 2000 to Jana-Server.
Ehlo... 250 OK
Mail from...250 OK
Rcpt to... 250 OK

Being having this problem with intrasite RGC's for about three weeks.
At indeterminate times =< 24hours, one RGC will fail. The associated SMTP
queues goes to retry. The properties of that queue state "connection dropped
by remote host". Once one RGC goes to retry, it takes 5 out ...

We have an EX2000 server on Windows 2000 SP3? (say Server1), and want to
upgrade by using the 'swing server' method.
Installed a new EX2003 server SP1 on Windows 2003 SP1 (say Server2) - all
seems fine.