• Subject: Re: AS/400 TCP/IP Servers
  • From: Larry Bolhuis <lbolhui@xxxxxxx>
  • Date: Tue, 19 Oct 1999 20:27:29 -0400
  • Organization: Arbor Solutions, Inc


  I have many customers running AS/400 DNS both for internal private only and
Network use.  These systems range from 436's to mid-sized 720's.  All respond in
ms.  They are noticable faster than using ISP supplied DNS Servers (due to fewer
hops to get there.)

  I also have several customers using the AS/400 SMTP server.  While this thing
doesn't run particularly zippy, it runs.  I know of no specific sites that we 
not send mail to from any AS/400.  

  There must be something wrong either in your network or in your AS/400.  
is not normal behavior.

  Is it possible that your network is not using private addresses and that the
addresses for fedex happen to conflict?  Just a thought here.

 - Larry

Brad Felber wrote:
> This is more of an observation than a question.  (and not Spam:)
> When setting up our AS/400 for E-mail, it started out as just E-mail using
> PPP dialing into our ISP.  the DNS server was on our ISP.  Our network keeps
> upgrading to now we have a straight TCP/IP network.  so I can use names for
> local machines, I started up DNS serving on the 400.  It go to be we were
> running TCP/IP servers for SMTP, POP, DHCP, DNS and all the Client Access
> servers.  something I have found is some of the servers on the 400 are
> horriable.  namely the DNS server.  it took about 50% of the processor and
> DNS lookups took about 30 seconds each.  I moved the DNS server to a FreeBSD
> box, and the lookups went to about a second.  Also, the SMTP server.  I
> don't know if I had it set up wrong, but there are a few companies like
> fedex.com (small companies like that) that I couldn't send E-mail to.  it
> would refuse my connection.  I assume since these were all large companies,
> they have some sort of spam blocker, and thought I was spam.  so I told the
> 400's SMTP server that I have a firewall, and send all of my E-mail to my
> ISP's e-mail router. and viola, I could send E-mail to everywhere. Has
> anyone else had these problems?
> --
> Brad Felber
> bradf@csepromo.com
> CSE, Inc.
> (262)786-8400 ext 3069

Larry Bolhuis         | What do You want to Reload today?
Arbor Solutions, Inc  | Don't throw your PC out the window,
(616) 451-2500        |  throw WINDOWS out of your PC.
(616) 451-2571 -fax   | Two rules to success in life:
lbolhui@ibm.net       | 1. Never tell people everything you know.
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