Hi gurus,

I am having an IIS6 server using it's SMTP virtual server to send mail.
There are two mail items that cannot be sent and the error logged is:

"The transport lost its connection to the server."

The connection timeout is set to 10minutes in SMTP server.
The email has some attachments.

What could be the cause for this error?

Thanks in advance.
Kind Regards,
Devapriya De Silva

[ Post a follow-up to this message ]

Devapriya De Silva,

This is normally caused by the SMTP service being either unable to
communicate with your relay server, or the outside world. It is common to
perform a reverse lookup on sending SMTP server names and IP addresses (anti
relay). I have most commonly come across the same problem before as when
customers are attempting to send mail from an IIS server to an internal SMTP
server and have not correctly configured relaying permissions.

Let me know a little more about your setup (whether you are trying to relay,
send directly to the outside world etc) and I may be able to pinpoint the
problem.

--
Bruce Cowper [MSFT]
Technet Canada

Please do not send an e-mail directly to this alias. This alias is for
newsgroup purposes only.
This posting is provided "AS IS" with no warranties and confers no rights.
"Devapriya De Silva" <ddesilva@qa-software.com> wrote in message
news:uRwMNUInEHA.2140@TK2MSFTNGP11.phx.gbl...
> Hi gurus,
>
> I am having an IIS6 server using it's SMTP virtual server to send mail.
> There are two mail items that cannot be sent and the error logged is:
>
> "The transport lost its connection to the server."
>
> The connection timeout is set to 10minutes in SMTP server.
> The email has some attachments.
>
> What could be the cause for this error?
>
> Thanks in advance.
> Kind Regards,
> Devapriya De Silva
>
>

[ Post a follow-up to this message ]

Bruce,

I use CDO to create mail and directly send them out.
My normal mail goes out (with/without attachments).
But this mail has three files attached to it which is in total of 7MB.
(360K/2MB/5MB)
If send the mail with 360K+2MB it goes out without any problem and same with
the 5MB attachment.

but if I add all three together it returns me the below mentioned error.

It is not a timeout as I noticed that it takes only about 2-3min to process
this mail and log the error.
also the "limit message size to" in IIS is set to 10240 (10MB)

Kind Regards,
Devapriya De Silva

"Bruce Cowper [MSFT]" <bcowper@online.microsoft.com> wrote in message
news:%23TzMNjLnEHA.3992@TK2MSFTNGP15.phx.gbl...
> Devapriya De Silva,
>
> This is normally caused by the SMTP service being either unable to
> communicate with your relay server, or the outside world. It is common to
> perform a reverse lookup on sending SMTP server names and IP addresses
(anti
> relay). I have most commonly come across the same problem before as when
> customers are attempting to send mail from an IIS server to an internal
SMTP
> server and have not correctly configured relaying permissions.
>
> Let me know a little more about your setup (whether you are trying to
relay,
> send directly to the outside world etc) and I may be able to pinpoint the
> problem.
>
> --
> Bruce Cowper [MSFT]
> technet Canada
>
> Please do not send an e-mail directly to this alias. This alias is for
> newsgroup purposes only.
> This posting is provided "AS IS" with no warranties and confers no rights.
> "Devapriya De Silva" <ddesilva@qa-software.com> wrote in message
> news:uRwMNUInEHA.2140@TK2MSFTNGP11.phx.gbl... 
>
>

[ Post a follow-up to this message ]

On Fri, 17 Sep 2004 20:39:59 +0600, "Devapriya De Silva"
<ddesilva@qa-software.com> wrote:

>I use CDO to create mail and directly send them out.
>My normal mail goes out (with/without attachments).
>But this mail has three files attached to it which is in total of 7MB.
>(360K/2MB/5MB)
>If send the mail with 360K+2MB it goes out without any problem and same wit
h
>the 5MB attachment.
>
>but if I add all three together it returns me the below mentioned error.
>
>It is not a timeout as I noticed that it takes only about 2-3min to process
>this mail and log the error.
>also the "limit message size to" in IIS is set to 10240 (10MB)

You're assuming the connection is lost due to something on your end.
What do the logs show?

Jeff


>Kind Regards,
>Devapriya De Silva
>
>"Bruce Cowper [MSFT]" <bcowper@online.microsoft.com> wrote in message
>news:%23TzMNjLnEHA.3992@TK2MSFTNGP15.phx.gbl... 
>(anti 
>SMTP 
>relay, 
>

[ Post a follow-up to this message ]

Jeff,

I enabled SMTP login and tried sending out this problematic mail. but there
is nothing unusual logged in it.
Are there any other error logs that I can look into?

Thanks for your help
Kind Regards,
Devapriya De Silva

"Jeff Cochran" <jeff.nospam@zina.com> wrote in message
news:414ffdb2.110871384@msnews.microsoft.com...
> On Fri, 17 Sep 2004 20:39:59 +0600, "Devapriya De Silva"
> <ddesilva@qa-software.com> wrote:
> 
with[vbcol=seagreen] 
process[vbcol=seagreen] 
>
> You're assuming the connection is lost due to something on your end.
> What do the logs show?
>
> Jeff
>
> 
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when[vbcol=seagreen] 
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mail.[vbcol=seagreen] 
>

[ Post a follow-up to this message ]

On Mon, 20 Sep 2004 16:11:31 +0600, "Devapriya De Silva"
<ddesilva@qa-software.com> wrote:

>I enabled SMTP login and tried sending out this problematic mail. but there
>is nothing unusual logged in it.
>Are there any other error logs that I can look into?

Nothing unusual as in the mail goes through fine according to the log?
I'm kind of leaning toward a time out connection somewhere still being
the issue.  I assume you have looked at the event viewer and find
nothing there either.

Jeff

>
>Thanks for your help
>Kind Regards,
>Devapriya De Silva
>
>"Jeff Cochran" <jeff.nospam@zina.com> wrote in message
>news:414ffdb2.110871384@msnews.microsoft.com... 
>with 
>process 
>to 
>when 
>the 
>rights. 
>mail. 
>

[ Post a follow-up to this message ]