IGNITe/400 Mailing List Archive Entry
Neil,

Friday the 13th. What a day!

Your problem is simple: Your AS/400 mail server is saying it is DPS.dpsLINK.COM but looking
up the IP address (199.3.95.21) results in a system name of ip-21.dpslink.com. My
understanding is that ibm.net requires that the name on the IP address match the system name
reported in the HELO e-mail command. They won't tell you that this is the problem; they just
refuse your mail.

Contact the person who maintains your reverse DNS and have them fix it and you should be in
business.

Bruce Hobbs
Netburg Internet Services
Cincinnati, Ohio, USA
E-mail: bhobbs@netburg.net


On Fri, Nov 13, 1998, 8:41:03 PM GMT Bleddyn Williams wrote:


>Hi Neil you may want to chat with Bruce from the IGNITe list?
>
>Thanks
>Bleddyn
>
>Webmaster for Morpheus & IGNITe/400
>
>http://ignite400.org/ your AS/400 Internet/Intranet questions answered.
>
>-----Original Message-----
>From: ign_list@ignite400.org [mailto:ign_list@ignite400.org]
>Sent: 13 November 1998 20:25
>To: IGNITE400 MEMBERS LIST Mailing List
>Subject: Re: An SMTP Posting Problem
>
>
>From: bhobbs@netburg.net (Bruce Hobbs, Netburg Internet Services)
>
>Bleddyn,
>
>At one time I had problems sending to ibm.net addresses. The problem seemed
>to be the reverse lookup was not working. A mail server sends "HELO
>mailservername.domain.com" or "EHLO mailservername.domain.com" and the
>receiving mail server can take the IP address of the conversation, do a
>reverse lookup and produce the system name, which should be the same.
>Running under V3R2, the server name reported in the HELO command is not
>correct. In my case, the server is bigboy.netburg.net but the HELO command
>reads "HELO netburg.net", which is not correct.
>
>To check if this is the problem, you must look at the mail server logs,
>which in case are on the IBM Global Services server. The headers will not
>show this part of the conversation. I'd like to help further but can't
>unless your friend can get e-mail out. Well, there is one test I can run;
>I'm running it now.
>
>Bruce
>
>
>On Fri, Nov 13, 1998, 7:27:49 PM GMT IGNITE400 MEMBERS LIST wrote:
>
>
>>From: "Bleddyn Williams"
>>
>>I had a chat with Neil Palmer on the midrange list on some problems he was
>>having with SMTP. This is what he found out which may be useful for anyone
>>contacting these sort of addresses.
>>
>>
>>
>>As a follow up to my previous posting I've become aware of something that
>>may be of interest.
>>Petro-Canada recently changed all their e-mail set up and it's now being
>>handled by IBM Global Services, as a small excerpt from the header info
>>below shows:
>>
>>Received: from petrocan.on.ca.ibm.net([129.37.152.8]) by DPS.DPSLINK.COM
>>(IBM OS/400 SMTP V04R02M00) with TCP; Thu, 5 Nov 1998 09:05:38 -0500
>>Received: from pcaxs04.pccw.petro-canada.ca ([156.44.161.183]) by
>>petrocan.on.ca.ibm.net (AIX4.2/UCB 8.7/8.7) with ESMTP id JAA29760 for
>>; Thu, 5 Nov 1998 09:05:51 -0500 (EST)
>>
>>THAT'S when the problem with the e-mail started for my customer using
>AS/400
>>SMTP for e-mail.
>>Apparently IBM Global Network has a problem with receiving e-mail from
>>AS/400's and they are "working on it" !!!!
>>
>>Co-incidentally, the only other e-mail addresses I have seen this problem
>on
>>(AS/400 SMTP routed mail) are with e-mail I had bounce back when sent to
>>addresses "@ibm.net" (Hi Al !) - so I guess it's the same problem.
>>
>>
>>
>>Thanks
>>Bleddyn
>>
>>--- IGNITE400 MEMBERS LIST
>>Intrested in putting your point across?
>>
>>http://ignite400.org/member/html/addart.htm
>>
>>
>
>--- IGNITE400 MEMBERS LIST
>Intrested in putting your point across?
>
>http://ignite400.org/member/html/addart.htm
>
>

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