On Sat, 7 Apr 2001, biniam sahlezghi wrote:
> Date: Sat, 7 Apr 2001 08:50:08 -0700 (PDT)
> From: biniam sahlezghi <[EMAIL PROTECTED]>
> Reply-To: [EMAIL PROTECTED]
> To: [EMAIL PROTECTED]
> Subject: SMTP error and NSLOOKUP
>
> I have a problem
> I can't send mail otside of my domain it says mail
> rejecyed error SMTP 550. But still I am recieving mail
> but not sending from workstation but I can send from
> the server.When I check the nslookup it says can't
> find server???
> Any quick solution guys
> Thank you
>
I assume you're using your local host as a SMTP server, right? In other
words, you're configuring your mail client to send the outgoing email to
your own local system for forwarding. Now, if that's the case, this is what
I'd suggest in order to troubleshoot the problem. First of all, we need
to find out the cause of the problem.
o Start by running the following command to see if the Sendmail process is
currently running in your system (I assume you're using Sendmail):
ps auxw | grep sendmail
You should see a line that includes:
sendmail: accepting connections on port 25
o Second, make sure that you can actually connect to that Sendmail daemon
just fine by running 'telnet localhost 25'. You should see something like
this (simply type "quit" to close the connection):
Trying 127.0.0.1...
Connected to localhost.localdomain.
Escape character is '^]'.
220 localhost.localdomain ESMTP Sendmail 8.9.3/8.9.3; Sat, 7 Apr 2001 13:53:57 -0500
o Now we know that your Sendmail process is working fine. Next, we need to
find out if you can resolve the domain name for the email address you're
sending a message to. Say I'm trying to send a message to [EMAIL PROTECTED]
I'd then do the following:
nslookup -query=mx qwest.net
This should return the list of mail servers that accept messages for that
domain. Pick whichever one is displayed with a preference of 1, and go to
the next step.
o Now, we need to see if your system can actually forward email to that
particular domain that you are interested on. Proceed to do this:
telnet mail9.uswest.net 25
helo qwest.net -------> this is my own domain (not truly necessary)
mail from: [EMAIL PROTECTED] ----> wait for OK
rcpt to: [EMAIL PROTECTED] ------> wait for OK
data ----> hit ENTER after this and do _not_ expect any reply
this is a test ---> or whatever other message you wish
. ----> this a dot in a single line, then hit ENTER, and expect to see
an OK message with some additional information
quit
Now, at this point you should have come across an error somewhere because
otherwise your email should be working just fine. Make sure you send the
actual error message to the list with a description of _exactly_ when it
happens. Then, we may be able to provide some help and perhaps even fix
the problem for you.
--
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