Re: Mail returned in Loop

Try this.

How to test SMTP operations using Telnet

1. Telnet into Exchange server hosting IMS service using TCP port 25.
Command is telnet <servername> 25

2. Turn on local echo on your telnet client so that you can see what you are
typing.
On Win 9x and NT 3.5/4.0 Telnet client this done by selecting the
"preferences" from the "terminal" pull down menu, and checking the local
echo radio button. For Windows 2000 telnet client, issue command "set
local_echo", from the telnet command prompt.

3. Issue the following smtp command sequence

helo <your domain name><enter>
response should be as follows
250 OK

mail from: <your Email Address><enter>
response should be as follows
250 OK - mail from <your Email address>

rcpt to: <recipient address><enter>
response should be as follows
250 OK - Recipient <recipient address>

data<enter>
response should be as follows
354 Send data. End with CRLF.CRLF

To: <recipient's display name><enter>
From: <your display name><enter>
Subject: <Subject field of Email message><enter>
<Enter you body text><enter><enter> . <enter>
response should be as follows
250 OK

quit<enter>
"Phil.T" <PhilT@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:5FB36C29-FC30-4C28-A348-550835DA3B2C@xxxxxxxxxxxxxxxx
>I have a client who I have been unable to send an email to for some months.
> The message I always receive back is automated and states "Unable to
> deliver
> message to the following recipients, because the message was forwarded
> more
> than the maximum allowed times. This could indicate a mail loop".
>
> I have reported this consistent problem to the intended recipitent who's
> own
> IT department have responded that they don't have any other similar
> problems
> so the actual problem must be at my end. I'm not convinced as I experience
> no
> similar problems with any other of my many hundreds of contacts.
>
> Any ideas please, even to say whether it is a problem I can deal with or a
> problem within the intended receipitents server?
> Many thanks
> Phil


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