450 host down on GWIA not always correct it seems

Folks, every once in a while we get a 450 host down to a specific domain. I
telnet that mail server and it does appear "down", does not respond on port
25.
However: They receiving domain insists they are not down and are receiving
messages from other domains and in fact test as we are on the phone and what
do you know they are receiving. So I run a test from mxtoolbox.com, and
somehow, even though my telnets fail and our gwia 7.0.3 fails as well,
mxtoolbox.com does not fail. The results from mxtoolbox.com are posted
below.
What is the deal? Why does telnet and GWIA both fail but not other mail
gateways. Is there something lacking in the GWIA technology?
SuperTool Beta
Command:
smtp:216.55.101.108 smtp
220 spamwall.mchsol.com ESMTP SpamWall
Not an open relay.
0 seconds - Good on Connection time
0.172 seconds - Good on Transaction time
OK - 216.55.101.108 resolves to spamwall.mchsol.com
OK - Reverse DNS matches SMTP Banner
Session Transcript:
HELO please-read-policy.mxtoolbox.com
250 spamwall.mchsol.com [47 ms]
MAIL FROM: <[email protected]>
250 Ok [47 ms]
RCPT TO: <[email protected]>
554 <[email protected]>: Relay access denied [31 ms]
QUIT
221 Bye [47 ms]
reverse lookup smtp diag port scan blacklist
Reported by mxtoolbox.com on Thursday, April 01, 2010 at 7:00:50 PM (GMT-5)
(History)
Martin Stepanek
Max International Associate
[email protected]
(705) 794-7181
( http://www.maxgxlnorth.ca/ )
There is no chance, no destiny, no fate that can circumvent or hinder or
control the firm resolve of a determined soul. - Ella Wheeler Wilcox

On 4/3/2010 11:57 AM, Martin Stepanek wrote:
> you didn't quite understand Ted or I didn't quite explain adequately.
> Thanks for you reply btw.
>
> When I found their correct MX, I telneted to the ip address on port 25 and
> no response. But yet that same IP answered a mail gateway. Is there a way
> with some mail exchanger to not reply to telnet?
>
> Martin Stepanek
> Max International Associate
> [email protected]
> (705) 794-7181
> ( http://www.maxgxlnorth.ca/ )
> There is no chance, no destiny, no fate that can circumvent or hinder or
> control the firm resolve of a determined soul. - Ella Wheeler Wilcox
>
Sure
a) transient issues in general.
b) broken "protections" that are blocking you as a suspected mailbomber.
These would block your ip address for a while and then stop. They
wouldn't block mxtoolkit

Similar Messages

  • Windows 2008r2 and 450 Host down

    We are running GW 8.0.2 on a Windows 2008r22 cluster. The server sits in the DMZ. A rule here as that no servers in the DMZ are allowed to be part of the main Windows domain of the company. Since clustering requires a domain controller we had to install our GWIA into its own Windows domain. My question is how will the following tid affect the server if we change the primay suffix of this computer as recommended by the tid.
    "450 Host Down" errors GWIA on Windows 2008
    This document (7005218) is provided subject to the disclaimer at the end of this document.
    Environment
    Microsoft Windows Server 2008
    Novell GroupWise 8
    Novell GroupWise 8 Internet Agent
    Situation
    When sending an outbound email with GWIA running on Windows 2008 Server, GWIA does not resolve DNS correctly and immediately shows a "450 Host Down" error (for the domain name of the recipient) when trying to send the message.
    In Diag log mode, GWIA also shows a "No MX records found" error for each outbound message.
    Resolution
    Right-click My Computer
    Go To Properties
    Click on Change settings > Change
    Go to the More tab then put the email domain name (such as "novell.com") in the "Primary DNS suffix of this computer" box.
    Document
    Document ID:7005218
    Creation Date:01-25-2010
    Modified Date:01-25-2011
    Novell Product:GroupWise
    Disclaimer
    The Origin of this information may be internal or external to Novell. Novell makes all reasonable efforts to verify this information. However, the information provided in this document is for your information only. Novell makes no explicit or implied claims to the validity of this information.
    Any trademarks referenced in this document are the property of their respective owners. Consult your product manuals for complete trademark information.

    [email protected]: wrote:
    > My question is how will the following tid affect the server if we change the
    > primay suffix of this computer as recommended by the tid.
    Other than making it work? It won't have any adverse affect at all - just put
    your normal company's internet domain in there.
    Danita
    Novell Knowledge Partner
    Moving GroupWise to Linux?
    http://www.caledonia.net/gwmove.html

  • GWIA running on SLES - 450 Host Down sending

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    Originally Posted by Bob-O-Rama
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  • GWIA 450 Host Down

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  • Mail comes in, but won't hardly go out. 450 host down

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    We keep getting 450 host down for owensville.k12.mo.us, which is our domain. Every now and then an email will be sent out, but it doesn't go through until 3-4 hours after it was initially sent. It has worked fine for years. The only thing that was recently done was that all users were removed except for two or three that still needed to send encrypted emails out to banks. I'm assuming that these issues started when that was done. I've recently been handed the responsibility of fixing this even though I have almost zero Groupwise administration experience.
    Other than I know our mail servers DNS name is mail.owensville.k12.mo.us I really don't know much else. Where do I begin looking?

    Well the emails never made it out. Here's what the GWIA log shows for the outbound email I sent. It's not even connecting to the IP for the external domain and ends up sending back to itself. DNS seems to be fine as I can resolve all MX and A records that came up on mxtoolbox for google mail and hotmail from the Groupwise server. The 192.168.0.47 ip is the ip for the NIC on the Groupwise server. All of the Groupwise features are hosted on this one box.
    07:33:30 3A6 DMN: MSG 2264946 Accepted connection: [192.168.0.47] ()
    07:33:30 3A6 DMN: MSG 2264946 Receiving file: GMAIL_S/SYS:\GDOMAIN\WPGATE\GWIA\receive\a42550f4.817
    07:33:30 3A6 DMN: MSG 2264946 SMTP session ended: [192.168.0.47] ()
    07:33:45 3A4 MSG 2264946 Processing inbound message: GMAIL_S/SYS:\GDOMAIN\WPGATE\GWIA\receive\A42550F4.817
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    07:33:45 3A4 MSG 2264946 Queuing message to daemon: GMAIL_S/SYS:\GDOMAIN\WPGATE\GWIA\send\sf055259.099
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    07:35:48 363 DMN: MSG 2264946 Connected to [192.168.0.47] (192.168.0.47)
    07:35:48 363 DMN: MSG 2264946 Transferred
    07:35:48 363 DMN: MSG 2264946 SMTP session ended: [192.168.0.47] (192.168.0.47)

  • 450 host down to only one domain

    GW7.0.4 on SLES10 patch level 3--email to one domain
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    Non-authoritative answer:
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  • 450 Host Down message/between domains

    Using Groupwise 6.5 and Novell 6, we can not successfully send email to a
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    Any ideas?
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    [email protected] wrote:
    > Using Groupwise 6.5 and Novell 6, we can not successfully send email to a
    > specific domain OUTSIDE of our company. We get the following messages in
    > the GWIA log:
    >
    > Detected error on SMTP command
    > Command : (the intended recipient)
    > Response: 450 Host Down (the intended recipient)
    > Deferring message
    >
    > The recipient's ISP claims to have never received any message. We can
    > successfully email this recipient using a different email client.
    >
    > Any ideas?
    This is really a question best posed on the support forums. These forums
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    problems first. Start with NSLookup (preferably on your host that does
    the SMTP forwarding). Then use the following commands:
    SET TYPE=MX
    foreign.domain
    Replace foreign.domain with the domain name you can't send to, e.g.:
    SET TYPE=MX
    novell.com
    You should see the mail exchanger (MX) record for the domain and the
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    SERVER 137.65.1.1
    SET TYPE=MX
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  • 450 Host down

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    ================================
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    Time of initial send attempt: 07-21-14 12:13:20
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    * glio wrote, On 07/21/2014 11:46 AM:
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    Novell Knowledge Associate
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  • URGENT! 450 HOST DOWN

    Hi,
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    Alan

    FAO Anybody who comes across this post...
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    I ran out of ideas, so rebooted the server... And this worked.
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    Alan

  • 450 host down to some domains.

    We could not send mails to some domains, the message is 450 host down. When I try to do dnsstuff check on those domains, this is what I get, is this really normal.
    Your 1 MX record is:
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    IP=6x.1xx.1xx.1bb [TTL=86400] [IT]
    IP=6x.1xx.1xx.1cc [TTL=86400] [IT]
    IP=6x.1xx.1xx.1dd [TTL=86400] [IT]
    IP=6x.1xx.1xx.1ee [TTL=86400] [IT]
    IP=6x.1xx.1xx.1ff [TTL=86400] [IT]
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    Then my smtp cannot figure which IP address to use. And I cannot event telnet port 25 on those servers or even ping.
    But they claim they can get e-mails from every where apart from my host. I tested and sent and e-mail from yahoo and it was delivered.
    This is what I expected if I look at yahoo with dnstuff.
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    1 d.mx.mail.yahoo.com. [TTL=1800] IP=209.191.88.254 [TTL=1800] [US]
    1 e.mx.mail.yahoo.com. [TTL=1800] IP=67.195.168.230 [TTL=1800] [US]
    1 f.mx.mail.yahoo.com. [TTL=1800] IP=98.137.54.237 [TTL=1800] [US]
    1 g.mx.mail.yahoo.com. [TTL=1800] IP=98.137.54.238 [TTL=1800] [US]
    1 h.mx.mail.yahoo.com. [TTL=1800] IP=66.94.236.34 (No Glue) [TTL=1800] [US]
    1 i.mx.mail.yahoo.com. [TTL=1800] IP=74.6.140.64 (No Glue) [TTL=1800] [US]
    1 j.mx.mail.yahoo.com. [TTL=1800] IP=66.94.237.64 (No Glue) [TTL=1800] [US]
    1 k.mx.mail.yahoo.com. [TTL=1800] IP=98.139.54.60 (No Glue) [TTL=1800] [US]
    1 l.mx.mail.yahoo.com. [TTL=1800] IP=74.6.136.244 (No Glue) [TTL=1800] [US]
    1 m.mx.mail.yahoo.com. [TTL=1800] IP=66.94.238.147 (No Glue) [TTL=1800] [US]
    1 a.mx.mail.yahoo.com. [TTL=1800] IP=67.195.168.31 [TTL=1800] [US]
    1 b.mx.mail.yahoo.com. [TTL=1800] IP=74.6.136.65 [TTL=1800] [US]
    1 c.mx.mail.yahoo.com. [TTL=1800] IP=206.190.54.127 [TTL=1800] [US]

    Sorry about this, just forget it. It was just that IP's were being blocked
    Originally Posted by grpadmin
    We could not send mails to some domains, the message is 450 host down. When I try to do dnsstuff check on those domains, this is what I get, is this really normal.
    Your 1 MX record is:
    10 mx.company.com [TTL=86400] IP=6x.1xx.1xx.1aa [TTL=86400] [IT]
    IP=6x.1xx.1xx.1bb [TTL=86400] [IT]
    IP=6x.1xx.1xx.1cc [TTL=86400] [IT]
    IP=6x.1xx.1xx.1dd [TTL=86400] [IT]
    IP=6x.1xx.1xx.1ee [TTL=86400] [IT]
    IP=6x.1xx.1xx.1ff [TTL=86400] [IT]
    It seems they have one mx record with changing IP addresses. Is this something new for security ?
    Then my smtp cannot figure which IP address to use. And I cannot event telnet port 25 on those servers or even ping.
    But they claim they can get e-mails from every where apart from my host. I tested and sent and e-mail from yahoo and it was delivered.
    This is what I expected if I look at yahoo with dnstuff.
    Your 13 MX records are:
    1 d.mx.mail.yahoo.com. [TTL=1800] IP=209.191.88.254 [TTL=1800] [US]
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