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List:       james-user
Subject:    Re: apache james can not send mail to cn.ibm.com
From:       David Legg <david.legg () searchevent ! co ! uk>
Date:       2013-01-23 10:19:09
Message-ID: 50FFB91D.3030105 () searchevent ! co ! uk
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Hi 怀守昆,

A quick look at the MX records for cn.ibm.com shows the following: -

cn.ibm.com    mail exchanger = 10 e23-mx1.au.ibm.com.
cn.ibm.com    mail exchanger = 10 e23-mx2.au.ibm.com.
cn.ibm.com    mail exchanger = 10 e23-mx3.au.ibm.com.
cn.ibm.com    mail exchanger = 5 e28-mx1.in.ibm.com.
cn.ibm.com    mail exchanger = 5 e28-mx2.in.ibm.com.
cn.ibm.com    mail exchanger = 5 e28-mx3.in.ibm.com.

The IP address James used corresponds to one of three assigned to 
e28-mx2.in.ibm.com

These addresses don't respond to pings but if I run the telnet command I 
get the expected response: -

   $ telnet 122.248.162.1 25
   Trying 122.248.162.1...
   Connected to 122.248.162.1.
   Escape character is '^]'.
   220 IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be 
prosecuted service ready; Wed, 23 Jan 2013 15:20:52 +0530

Perhaps you should try the same telnet command from your server to see 
if you get the same.  Port 25 is the standard port you would expect to 
be used for email so I don't think they would be using another one.  If 
telnet doesn't work then it is likely a firewall is blocking your 
attempt somewhere and you may have to perform a trace command to see 
where the packets stop.

David Legg

On 23/01/13 09:03, 怀守昆 wrote:
> Hi I am using apache james 3.0 beta4 as smtp server for bugzilla.
>
> But bugs can not be send to emails with domain cn.ibm.com, while others,
> e.g. qq.com, 189.cn is ok.
>
> here is james-server.log
>
> INFO 15:04:28,246 | james.mailetcontext | Attempting delivery of
> Mail1358908611554-2c8c17fb-613e-4d80-8683-738ab242ef3f-to-cn.ibm.com to
> host e28-mx2.in.ibm.com. at 122.248.162.4 from myname@sina.com for
> addresses [myname@cn.ibm.com]
>
> INFO 15:04:30,592 | james.mailetcontext | Could not connect to SMTP host:
> 122.248.162.4, port: 25
>
> INFO 15:04:30,593 | james.mailetcontext | Attempting delivery of
> Mail1358908611554-2c8c17fb-613e-4d80-8683-738ab242ef3f-to-cn.ibm.com to
> host e28-mx2.in.ibm.com. at 122.248.162.5 from myname@sina.com for
> addresses [myname@cn.ibm.com]
>
> INFO 15:04:33,069 | james.mailetcontext | Could not connect to SMTP host:
> 122.248.162.5, port: 25
>
> It seems james always try to connect SMTP server's port 25, can james
> connect to other port?
>


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