exchange Server 2003 smtp connector via smarthost problem

Martin Bodenstedt · Joined: 22 Feb 2008 Posts: 2

Hi there,

we are running an exchange Server 2003 with an outbound smtp connector
configured to send mails via a smarthost (Ironport Appliance) in our DMZ
to the internet.

i'm seeing the strange effect that from time to time the mail queue
builds up with no mail sent for up to 10 minutes and the suddenly all
mails get sent out.

Emulating an smtp session via telnet from the exchange server to the
smart host works just fine.

The virtual smtp server is configured to use the dns name of the smart
host in the helo message as seen from the internet.

Any ideas anyone?

--
Martin Bodenstedt

(www.die-bodenstedts.de / www.maboko.de)

Archived from group: microsoft>public>exchange>connectivity

Lanwench [MVP - Exchange] · Joined: 05 Aug 2007 Posts: 875

Martin Bodenstedt wrote:
> Hi there,
>
> we are running an exchange Server 2003 with an outbound smtp connector
> configured to send mails via a smarthost (Ironport Appliance) in our
> DMZ to the internet.
>
> i'm seeing the strange effect that from time to time the mail queue
> builds up with no mail sent for up to 10 minutes and the suddenly all
> mails get sent out.
>
> Emulating an smtp session via telnet from the exchange server to the
> smart host works just fine.
>
> The virtual smtp server is configured to use the dns name of the smart
> host in the helo message as seen from the internet.
>
> Any ideas anyone?

What's the status of the items in the queue?

Martin Bodenstedt · Joined: 22 Feb 2008 Posts: 2

Lanwench [MVP - Exchange] schrieb:
> Martin Bodenstedt wrote:

>> Hi there,
>>
>> we are running an exchange Server 2003 with an outbound smtp connector
>> configured to send mails via a smarthost (Ironport Appliance) in our
>> DMZ to the internet.
>>
>> i'm seeing the strange effect that from time to time the mail queue
>> builds up with no mail sent for up to 10 minutes and the suddenly all
>> mails get sent out.
>>
>> Emulating an smtp session via telnet from the exchange server to the
>> smart host works just fine.
>>
>> The virtual smtp server is configured to use the dns name of the smart
>> host in the helo message as seen from the internet.
>>
>> Any ideas anyone?

> What's the status of the items in the queue?

either "added to queue" (translated from German)
or "repating" (translated from German)

I have the suspicion that in these cases a single message is beeing
processed slowly holding up all others.

Doing a manual smtp session using telnet to our smart host while the
queue is long works just fine - the ironport appliance answers
immediately and processes the manual message instantly...

--
Martin Bodenstedt

(www.die-bodenstedts.de / www.maboko.de)

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