Groups > comp.lang.java.programmer > #6763

Re: JavaMail bug?

From	Martin Gregorie <martin@address-in-sig.invalid>
Newsgroups	comp.lang.java.programmer
Subject	Re: JavaMail bug?
Date	2011-08-02 20:01 +0000
Organization	UK Free Software Network
Message-ID	<j19l2v$h45$1@localhost.localdomain> (permalink)
References	(3 earlier) <j0kilj$8bg$4@localhost.localdomain> <j0v8t7$os9$1@localhost.localdomain> <99njvpFv11U1@mid.individual.net> <j1771e$smf$1@localhost.localdomain> <99qjntFk6uU1@mid.individual.net>

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On Tue, 02 Aug 2011 16:34:20 +0100, Nigel Wade wrote:

>> What does my SSCE do in your environment?
> 
> I get:
> 
> javax.mail.MessagingException: Unknown SMTP host: zoogz.gregorie.org;
>    nested exception is:
>          java.net.UnknownHostException: zoogz.gregorie.org
> 
> I presume your DNS does not propagate upward from your zone.
>
Correct. Its definitive only within my LAN and my firewall refused all 
connections from outside.

> But it /is/ attempting to resolve that hostname via our DNS servers. 
> It's not using localhost.
>
Interesting. I wonder why we're seeing a difference.
I assume you ran it with no command line arguments except (possibly) 
'debug'. 

When I do that the debugging text says that it was trying to connect to 
zoogz.gregorie.org.  Lines 7 and 8 show the first 220 followed a DEBUG 
line reporting this. Then lines 31 and 32 report a failure to connect to 
localhost and the resulting exception. If you're following this with 
Wireshark I'd expect you to see the first connect attempt but maybe not 
the second. Here's the debugging output:

$ java MATestMail debug
DEBUG: setDebug: JavaMail version 1.4.4
DEBUG: getProvider() returning javax.mail.Provider
[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]
DEBUG SMTP: useEhlo true, useAuth false
DEBUG SMTP: trying to connect to host "zoogz.gregorie.org", port 25, isSSL 
false
220 zoogz.gregorie.org ESMTP Postfix
DEBUG SMTP: connected to host "zoogz.gregorie.org", port: 25

EHLO zappa.gregorie.org
250-zoogz.gregorie.org
250-PIPELINING
250-SIZE 51200000
250-VRFY
250-ETRN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
DEBUG SMTP: Found extension "PIPELINING", arg ""
DEBUG SMTP: Found extension "SIZE", arg "51200000"
DEBUG SMTP: Found extension "VRFY", arg ""
DEBUG SMTP: Found extension "ETRN", arg ""
DEBUG SMTP: Found extension "ENHANCEDSTATUSCODES", arg ""
DEBUG SMTP: Found extension "8BITMIME", arg ""
DEBUG SMTP: Found extension "DSN", arg ""
smtp://kiwi@zoogz.gregorie.org
smtp://kiwi@zoogz.gregorie.org
DEBUG: getProvider() returning javax.mail.Provider
[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]
DEBUG SMTP: useEhlo true, useAuth false
DEBUG SMTP: trying to connect to host "localhost", port 25, isSSL false
javax.mail.MessagingException: Could not connect to SMTP host: localhost, 
port: 25;
  nested exception is:
	java.net.ConnectException: Connection refused
	at com.sun.mail.smtp.SMTPTransport.openServer
(SMTPTransport.java:1934)
	at com.sun.mail.smtp.SMTPTransport.protocolConnect
(SMTPTransport.java:638)
	at javax.mail.Service.connect(Service.java:295)
	at javax.mail.Service.connect(Service.java:176)
	at javax.mail.Service.connect(Service.java:125)
	at javax.mail.Transport.send0(Transport.java:194)
	at javax.mail.Transport.send(Transport.java:124)
	at MATestMail.main(MATestMail.java:59)
Caused by: java.net.ConnectException: Connection refused
	at java.net.PlainSocketImpl.socketConnect(Native Method)
	at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)
	at java.net.PlainSocketImpl.connectToAddress
(PlainSocketImpl.java:213)
	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
	at java.net.Socket.connect(Socket.java:529)
	at java.net.Socket.connect(Socket.java:478)
	at com.sun.mail.util.SocketFetcher.createSocket
(SocketFetcher.java:288)
	at com.sun.mail.util.SocketFetcher.getSocket
(SocketFetcher.java:231)
	at com.sun.mail.smtp.SMTPTransport.openServer
(SMTPTransport.java:1900)
	... 7 more

At this point I really am going to drop off the net for a few days - got 
a 5AM start tomorrow.


-- 
martin@   | Martin Gregorie
gregorie. | Essex, UK
org       |

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Thread

JavaMail bug? Martin Gregorie <martin@address-in-sig.invalid> - 2011-07-23 20:32 +0000
  Re: JavaMail bug? Knute Johnson <september@knutejohnson.com> - 2011-07-23 20:54 -0700
    Re: JavaMail bug? Martin Gregorie <martin@address-in-sig.invalid> - 2011-07-24 09:50 +0000
      Re: JavaMail bug? Knute Johnson <september@knutejohnson.com> - 2011-07-24 09:27 -0700
        Re: JavaMail bug? Martin Gregorie <martin@address-in-sig.invalid> - 2011-07-25 19:36 +0000
          Re: JavaMail bug? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2011-07-25 23:00 -0700
            Re: JavaMail bug? Steve Sobol <sjsobol@JustThe.net> - 2011-07-25 23:18 -0700
              Re: JavaMail bug? Martin Gregorie <martin@address-in-sig.invalid> - 2011-07-26 17:49 +0000
            Re: JavaMail bug? Martin Gregorie <martin@address-in-sig.invalid> - 2011-07-26 17:42 +0000
  Re: JavaMail bug? Nigel Wade <nmw-news@ion.le.ac.uk> - 2011-07-25 15:40 +0100
    Re: JavaMail bug? Martin Gregorie <martin@address-in-sig.invalid> - 2011-07-25 19:54 +0000
      Re: JavaMail bug? Martin Gregorie <martin@address-in-sig.invalid> - 2011-07-25 20:11 +0000
        Re: JavaMail bug? Martin Gregorie <martin@address-in-sig.invalid> - 2011-07-29 21:32 +0000
          Re: JavaMail bug? Knute Johnson <september@knutejohnson.com> - 2011-07-29 16:26 -0700
          Re: JavaMail bug? Nigel Wade <nmw-news@ion.le.ac.uk> - 2011-08-01 13:20 +0100
            Re: JavaMail bug? Martin Gregorie <martin@address-in-sig.invalid> - 2011-08-01 21:49 +0000
              Re: JavaMail bug? Nigel Wade <nmw-news@ion.le.ac.uk> - 2011-08-02 16:34 +0100
                Re: JavaMail bug? Martin Gregorie <martin@address-in-sig.invalid> - 2011-08-02 20:01 +0000
                Re: JavaMail bug? Nigel Wade <nmw-news@ion.le.ac.uk> - 2011-08-03 09:27 +0100
                Re: JavaMail bug? Martin Gregorie <martin@address-in-sig.invalid> - 2011-08-08 22:50 +0000
                Re: JavaMail bug? Nigel Wade <nmw-news@ion.le.ac.uk> - 2011-08-09 13:31 +0100
                Re: JavaMail bug? Martin Gregorie <martin@address-in-sig.invalid> - 2011-08-09 22:47 +0000
                Re: JavaMail bug? Nigel Wade <nmw-news@ion.le.ac.uk> - 2011-08-10 09:34 +0100
                Re: JavaMail bug? Martin Gregorie <martin@address-in-sig.invalid> - 2011-08-10 19:37 +0000
                Re: JavaMail bug? Nigel Wade <nmw-news@ion.le.ac.uk> - 2011-08-03 09:38 +0100
                Re: JavaMail bug? Martin Gregorie <martin@address-in-sig.invalid> - 2011-08-16 21:06 +0000
                Re: JavaMail bug? Nigel Wade <nmw-news@ion.le.ac.uk> - 2011-08-17 10:29 +0100
                Re: JavaMail bug? Martin Gregorie <martin@address-in-sig.invalid> - 2011-08-17 19:54 +0000
                Re: JavaMail bug? Nigel Wade <nmw-news@ion.le.ac.uk> - 2011-08-18 09:34 +0100
                Re: JavaMail bug? Martin Gregorie <martin@address-in-sig.invalid> - 2011-08-18 19:50 +0000
          Re: JavaMail bug? Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-08-01 12:54 +0000

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