Re: javamail send error

priyom wrote:

Hi,

I am using javamail 1.4 API to send messages through a SMTP server.
The problem is I get the following error:

550 5.7.1 Unable to relay for a@xxxxx
(I have changed the actual address here-but it's a valid address)

Note: The Outgoing server requires authentication.
Probably I'm going wrong there...
Is there any way to verify if authentication has succeeded or not?


How is authentication configured on your mail server?

A client must only attempt authentication if the server offers it. This will be
done in response to an EHLO message sent by the client. The response to this
indicates the services offered by the mail server. If AUTH is not among them
then it is incorrect for the client to attempt authentication.

Some mail servers will offer AUTH on the normal SMTP port of 25 and some will
only offer it on the mail submission port, 587. You can find out using telnet
what services your mail server offers on those ports. Telnet to port 25 and
send it a EHLO request. If the response doesn't include AUTH then try the same
on port 587. If that does include AUTH then you need to modify your smtp
Transport connection set the port to 587. If neither include AUTH then you need
to contact Microsoft and ask them what non-standard authentication scheme they
have implemented for mail submission in Exchange/Outlook.

One more thing, there is no problem accessing Inbox - Incoming mail
(IMAP) works absolutely fine ...

That's an entirely different protocol, on a different port, for reading mail.



.....
Output:
DEBUG SMTP: trying to connect to host "a.b.c.d", port 25, isSSL false
220 <host string> Microsoft ESMTP MAIL Service, Version: 5.0.2195.6713
ready at Wed, 8 Feb 2006 08:31:49 -0600
DEBUG SMTP: connected to host "a.b.c.d", port: 25
.
.
.
.
MAIL FROM:<a@xxxxx>
250 2.1.0 a@xxxxxxxxxxxxxxx OK
RCPT TO:<a@xxxxx>
550 5.7.1 Unable to relay for a@xxxxx
DEBUG SMTP: Invalid Addresses
DEBUG SMTP: a@xxxxx
DEBUG SMTP: Sending failed because of invalid destination addresses
RSET
250 2.0.0 Resetting

You've missed out the interesting bits...

--
Nigel Wade, System Administrator, Space Plasma Physics Group,
University of Leicester, Leicester, LE1 7RH, UK
E-mail : nmw@xxxxxxxxxxxx
Phone : +44 (0)116 2523548, Fax : +44 (0)116 2523555
.

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