Re: Client refusing incoming smtp messages

What I mean is client using Outlook 2003; sending out internet mail via SMTP
works fine. But when trying to RECEIVE internet email the following SMTP
error message occurs:

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

PeiJung.Lu@xxxxxxxx
SMTP error from remote mailer after RCPT TO:<PeiJung.Lu@xxxxxxxx>:
host modns.moxa.com [59.124.42.188]: 550 5.1.1 <PeiJung.Lu@xxxxxxxx>...
User unknown

This is the NDR message received from the SENDER. The only way the Outlook
client can receive SMTP messages is when I send them thru telnet. This was
how I verified if there is a problem, seems like SMTP Outlook client only
receives internet email via telnet. This is rather very quirky, so what went
wrong?

--
Mark Anthony MCSE 2003


"Lanwench [MVP - Exchange]" wrote:

Masitpro_mcse <Masitpromcse@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
Added new user account to AD/Exchange 2003 and verified smtp address.
Client is able to send out internet email messages

Meaning, using Outlook or OWA to connect directly to the Exchange mailbox?
No Internet Mail service on your mail client, right? .

but will not
accept incoming internet email.

Get following NDR message:

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es)
failed:

client@xxxxxxxxxx
SMTP error from remote mailer after RCPT TO:<client@xxxxxxxxxx>:
host modns.domain.com [59.124.42.188]: 550 5.1.1
<client@xxxxxxxxxx>... User unknown

When I telnet to that IP address on port 25, the banner looks like you've
got a PIX. If so, you need to disable Mailguard on it.

http://support.microsoft.com/kb/295725

This may or may not be the cause of your actual problem - your description
is a bit confusing.


The funny thing is I can send smtp messages via telnet and it is
received at the client mailbox. Always add or modify accounts and I
have not crossed this type of problem before; what to do next?

You'll need to provide more info, I think.

What's your real domain name? No need to hide it - it isn't a state secret.
:)





.

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