RE: [SLE] Sending Mail on the LAN (SUSE 8.0)
From: Ted Harding (Ted.Harding_at_nessie.mcc.ac.uk)
Date: 10/15/04
- Previous message: peter Nikolic: "Re: [SLE] PCMCIA Wireless G with External Antenna Connector?"
- In reply to: Don Parris: "[SLE] Sending Mail on the LAN (SUSE 8.0)"
- Next in thread: Don Parris: "Re: [SLE] Sending Mail on the LAN (SUSE 8.0)"
- Reply: Don Parris: "Re: [SLE] Sending Mail on the LAN (SUSE 8.0)"
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
Date: Fri, 15 Oct 2004 10:32:08 +0100 (BST) To: Don Parris <webdev@matheteuo.org>
On 15-Oct-04 Don Parris wrote:
> Well gang, I've got a few boxes running SUSE 8.0 Pro. I would
> like to be able to send mail between hosts on the LAN, which
> is not connected to the outside world. The Yast Mail module
> didn't do anything that I can tell. At leasat I don't get e-mail
> between hosts. Having viewed the READMEs and other documentation,
> I think I'm more confused than enlightened.
>
> I'm using a hosts file - not a DNS server. (I know that sendmail
> can use a "well-formed" hosts file.)
You may need to probe a bit to get to the bottom of what's wrong.
Sendmail should work fine on a LAN (there can be complications
if you also mail to the outside world, e.g. via dial-up: you may
then need to explicitly despatch the outgoing mail using a modified
sendmail.cf file so as to masquerade your sending machine).
As a first test, try seeing of you can send mail between your
local machines using explicit IP addresses.
Suppose (but modifiy the IP addresses to match your local setup)
you have three machines whose IP addresses are
192.168.0.1 192.168.0.2 192.168.0.3
and you are sitting at [1] and want to send a message to user "don"
at [2]. Then, when entering the "To:" destination address, enter
don@[192.168.0.2]
(note the square brackets). If it goes through, then sendmail is
doing its job and also [2] is accepting SMTP connections.
If not, then have a look at /var/log/mail where you should see
a comment about what happened to the mail. As a further test of
what went wrong in this case, try a manual SMTP dialogue from
machine [1] by telnet to port 25 on machine [2], like
telnet 192.168.0.2 25
[220-response from remote]
ehlo 192.168.0.1
[250-response from remote]
mail from: userid@[192.168.0.1]
[250-response from remote]
rcpt to: don@[192.168.0.2]
[250-response from remote]
data
[354-response from remote]
Subject: test message
This is a test
.
[response from remote]
at which stage you should see that the message has been accepted
for delivery, and it should turn up in don's inbox on [2].
If it fails anywhere along the line, you will get an explicit
error message at that stage. In particular, wherever it says
"250-response" above you should get a response beginning with
"250" which is the SMTP code for "OK, valid so far".
As a template for what you should see, here is a complete dialogue
between two of my machines:
============================================================
> telnet 192.168.0.6 25
Trying 192.168.0.6...
Connected to 192.168.0.6.
Escape character is '^]'.
220 brandy.fort.knox.uk ESMTP Sendmail 8.11.3/8.11.3/SuSE Linux
8.11.1-0.5; Fri, 15 Oct 2004 10:13:16 +0100
ehlo 192.168.0.7
250-brandy.fort.knox.uk Hello compo.fort.knox.uk [192.168.0.7], pleased
to meet you
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-SIZE
250-DSN
250-ONEX
250-ETRN
250-XUSR
250 HELP
mail from: ted@[192.168.0.7]
250 2.1.0 ted@[192.168.0.7]... Sender ok
rcpt to: ted@[192.168.0.6]
250 2.1.5 ted@[192.168.0.6]... Recipient ok
data
354 Enter mail, end with "." on a line by itself
Subject: test message
This is a test
.
250 2.0.0 i9F9Dm817669 Message accepted for delivery
quit
221 2.0.0 brandy.fort.knox.uk closing connection
Connection closed by foreign host.
============================================================
Possible system-setting reasons for failure can include security
settings on inetd services. You may get "conection refused" on
the first line, so that port 25 (SMTP) on [2] is refusing connections.
You may get down to the "rcpt to:" line, and then get something
like "relaying denied".
You may get through the above dialogue and yet the mail does not
turn up in don's inbox on [2], in which case while the mail has been
accepted by [2], it has not been delivered. This is then a problem
with the mail delivery software on [2]. And so on.
Anyway, try things out and let us know what happens.
Good luck,
Ted.
--------------------------------------------------------------------
E-Mail: (Ted Harding) <Ted.Harding@nessie.mcc.ac.uk>
Fax-to-email: +44 (0)870 094 0861 [NB: New number!]
Date: 15-Oct-04 Time: 10:32:08
------------------------------ XFMail ------------------------------
-- Check the headers for your unsubscription address For additional commands send e-mail to suse-linux-e-help@suse.com Also check the archives at http://lists.suse.com Please read the FAQs: suse-linux-e-faq@suse.com
- Previous message: peter Nikolic: "Re: [SLE] PCMCIA Wireless G with External Antenna Connector?"
- In reply to: Don Parris: "[SLE] Sending Mail on the LAN (SUSE 8.0)"
- Next in thread: Don Parris: "Re: [SLE] Sending Mail on the LAN (SUSE 8.0)"
- Reply: Don Parris: "Re: [SLE] Sending Mail on the LAN (SUSE 8.0)"
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
Relevant Pages
|
