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Home > Archive > IIS and SMTP > January 2004 > SMART HOST and FRONT END SERVER
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SMART HOST and FRONT END SERVER
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| MORE DETAIL.
We have a Front End server and a backend server.
Originally the Front end server was doing all the SMTP
traffic to the Internet. Now we want to use our Linux box
as the Smarthost. If I put in the Linus box as my
Smarthost in the SMTP Virtual Server, no mail gets
delivered to my internal boxes.
We get the error:
Unable to deliver message to the following recipients,
because the message was forwarded more than the maximum
allowed times. This could indicate a mail loop.
Any help would greatly be appreciated..quote:
>-----Original Message-----
>We put a smarthost in our front end server to point to
thequote:
>linux sendmail server. This put the messages in a loop
soquote:
>messages bounce. It NEVER delivers to the BACKEND
server.quote:
>
>Does anyone have any suggestions or insite?
>
>Thanks
>
>Beth
>.
>
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| Jeff Cochran 2004-01-24, 2:05 am |
| On Tue, 23 Dec 2003 07:37:06 -0800,
<anonymous@discussions.microsoft.com> wrote:
quote:
>MORE DETAIL.
>
>We have a Front End server and a backend server.
>Originally the Front end server was doing all the SMTP
>traffic to the Internet. Now we want to use our Linux box
>as the Smarthost. If I put in the Linus box as my
>Smarthost in the SMTP Virtual Server, no mail gets
>delivered to my internal boxes.
>
>We get the error:
>Unable to deliver message to the following recipients,
>because the message was forwarded more than the maximum
>allowed times. This could indicate a mail loop.
Does the Linux box forward back to the Windows one? And which one
handles the internal mail boxes (POP3)?
Jeff
[QUOTE][color=darkred]
>Any help would greatly be appreciated..
>the
>so
>server.
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| We do not use POP3 at all. All the mailboxes are on the
backend server. We have one Linux box for outgoing and
one for incoming.. I am assuming the incoming is passing
from the incoming Linux box to the Exchange Front End
server and for some reason the front end server is passing
it to the outgoing Linux box instead of passing it to the
back end server. But that is just my guess.
We don't see the mail sitting anywhere, so I am also
ASSUMING it bounces around until it bounces back.
quote:
>-----Original Message-----
>On Tue, 23 Dec 2003 07:37:06 -0800,
><anonymous@discussions.microsoft.com> wrote:
>
box[QUOTE][color=darkred]
>
>Does the Linux box forward back to the Windows one? And
which onequote:
>handles the internal mail boxes (POP3)?
>
>Jeff
>
>
>.
>
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| Jeff T 2004-01-24, 2:06 am |
| Perhaps it is looking up the domain in the DNS and
getting the outside address and delivering to there, you
may need to tell the sendmail to forward mail for that
domain directly to the IP address of the backend server.
The logs in the linux /var/log/maillog would tell you if
the mail is looping and where between !
Jeff T
quote:
>-----Original Message-----
>We do not use POP3 at all. All the mailboxes are on the
>backend server. We have one Linux box for outgoing and
>one for incoming.. I am assuming the incoming is
passingquote:
>from the incoming Linux box to the Exchange Front End
>server and for some reason the front end server is
passingquote:
>it to the outgoing Linux box instead of passing it to
thequote:
>back end server. But that is just my guess.
>
>We don't see the mail sitting anywhere, so I am also
>ASSUMING it bounces around until it bounces back.
>
>
>box
maximum[QUOTE][color=darkred]
And[QUOTE][color=darkred]
>which one
to[QUOTE][color=darkred]
loop[QUOTE][color=darkred]
>.
>
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