Re: smtp server sending issues

From: Jeff Cochran (jeff.nospam_at_zina.com)
Date: 07/21/04 

Date: Wed, 21 Jul 2004 15:41:37 GMT

On Tue, 20 Jul 2004 19:59:31 -0700, "shelly"
<anonymous@discussions.microsoft.com> wrote:

>When I send a test message from the web server on
>63.71.210.6, it sends to the IMail server ok
>(63.71.210.99). The second test message tries to connect
>to our internal Exchange server (10.10.10.225). Something
>does not appear to be configured properly in DNS between
>our internal exchange server and our servers on the DMZ.
>We have a PIX 515 firewall that is configured for the DMZ
>and internal servers. I'm sure that is fine.
>
>I have DNS running on the IMail server to allow mail to
>pass from the DMZ to our internal Exchange server (for
>testing and sending mail to and from clients on the IMail
>server).
>
>Do you have any suggestions?

Sounds like iMail accepts mail from your web server but won't relay
mail from it. That's an iMail issue, and Ipswitch's knowledge base
should have answers or post on the iMail mailing list for support.

You're running three mail servers, IIS/SMTP, iMail and Exchange. Is
there a valid reason for this? Perhaps you can simplify this by
rethinking your setup.

Jeff

>>-----Original Message-----
>>On Tue, 20 Jul 2004 13:58:29 -0700, "shelly"
>><anonymous@discussions.microsoft.com> wrote:
>>
>>>Thanks Jeff but the main issue is that I can't seem to
>>>send emails from our IIS web servers to our IMail
>server.
>>>I can telnet to it but can't send scripted emails.
>>>
>>>IMail - 63.71.210.99
>>>web servers - 63.71.210.6, 63.71.210.5, 63.71.210.8
>>>
>>>I've got the smart host set to 63.71.210.99 but it's
>>>still not working. Getting Status: 5.0.0 messages now.
>>
>>Is iMail set to allow relay from the web server IP
>addresses? Is
>>there a firewall in between? And have you checked the
>SMTP logs on
>>both the IIS server and the iMail server?
>>
>>Jeff
>>
>>
>>>Shelly
>>>
>>>>-----Original Message-----
>>>>On Tue, 20 Jul 2004 10:05:11 -0700, "shelly campbell"
>>>><shelly@borrisinfogroup.com> wrote:
>>>>
>>>>>In the last week (since Jul 14), I've been having
>>>>>problems sending email from our web servers running
>IIS
>>>5
>>>>>and the SMTP service. I applied the latest security
>>>>>updates: 839645, 841872, 841873, 840315, 842526 and
>>>>>823353. Strange I'm able to telnet but no consistent
>>>>>smtp. I've also been getting the following errors in
>>>the
>>>>>event log trying to send to a domain that I know
>exists.
>>>>>
>>>>>Please let me know if you have any ideas as to the
>>>cause.
>>>>>
>>>>>Thanks!
>>>>>
>>>>>
>>>>>Event Type: Warning
>>>>>Event Source: smtpsvc
>>>>>Event Category: None
>>>>>Event ID: 4001
>>>>>Date: 7/20/2004
>>>>>Time: 10:38:13 AM
>>>>>User: N/A
>>>>>Computer: AGWEB1
>>>>>Description:
>>>>>Message delivery to the remote domain 'pop.ag-is.com'
>>>>>failed. The error message is 'An SMTP protocol error
>>>>>occurred.
>>>>>'. The SMTP verb which caused the error is 'RCPT'.
>The
>>>>>response from the remote server is '550 5.7.1 Unable
>to
>>>>>relay for webmaster@pop.ag-is.com
>>>>>'.
>>>>>Data:
>>>>>0000: d7 02 04 c0 ×..À
>>>>
>>>>This was an attempted relay through the server
>>>responding to the SMTP
>>>>connection to the destination. If you're using a
>smart
>>>host, then you
>>>>likely do not have permission to use it. If not, the
>>>other end may
>>>>have troubles.
>>>>
>>>>>Event Type: Warning
>>>>>Event Source: smtpsvc
>>>>>Event Category: None
>>>>>Event ID: 4000
>>>>>Date: 7/20/2004
>>>>>Time: 10:46:55 AM
>>>>>User: N/A
>>>>>Computer: AGWEB1
>>>>>Description:
>>>>>Message delivery to the remote
>>>domain 'webarkitechs.com'
>>>>>failed for the following reason: Destination server
>>>does
>>>>>not exist.
>>>>>
>>>>>Data:
>>>>>0000: d6 02 04 c0 Ö..À
>>>>
>>>>I'm not sure why anyone gets confused by this. The
>>>destination domain
>>>>doesn't have a mail server answering. If the
>>>destination server
>>>>doesn't exist, you can't send mail to it. If your
>>>vacation
>>>>destination doesn't exist, you can't buy an airline
>>>ticket to it
>>>>either. :)
>>>>
>>>>Note that the destination doesn't exist *to your mail
>>>server at the
>>>>time the connection attempt is made*. Network
>troubles,
>>>DNS errors,
>>>>destination system offline for a while, all could
>result
>>>in this.
>>>>
>>>>By the way, the domain exists as I write this response.
>>>>
>>>>Jeff
>>>>.
>>>>
>>
>>.
>>

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