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smtp responses slow when sending emails using smtp engine and proprietary program

our development team has put together a program that sends out email directly from a GUI once they put an email address in. it actually sends out 2 emails which are confirmations,one goes to the BUYER and one to the SELLER. the program apparently uses the default MAPI profile of the person that is logged into the PC to send email
we updated our exchange environment and we have a 2003 environment, as well as a 2007 environment.
when relaying email off of the 2003 environment, it works flawlessly
when relaying email off of the 2007 environment, there are some delays when sending email, and it looks to be as if it gets delayed 5 seconds, and sometimes 10 seconds if there is a lot of email traffic at once. i read up a little on tarpitting, could this be the cause of the delayed emails? anyone have any other ideas? how can i turn tarpitting off?
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jsctechy
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jsctechy
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1 Solution
 
AmitIT ArchitectCommented:
To disable the tarpit behavior, set the value to 00:00:00

To check the SMTP tarpit interval on your ReceiveConnectors, use the following shell command:
get-ReceiveConnector | select name,tarpitinterval

You can set it to a higher value - I have mine set to 10 seconds - using set-ReceiveConnector:
set-ReceiveConnector "Receive Connector Name" -tarpitinterval 00:00:10

The value is in hours:minutes:seconds.

Hope this helps
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jsctechyAuthor Commented:
do you think this tarpit interval could be the caus of this? do you think it could be something else?
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jsctechyAuthor Commented:
also- do you think i can do this during business hours without disrupting email flow?
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AmitIT ArchitectCommented:
As per your query you need to disable it so i give that answer.

As far as, whether this could be the reason. I assume not, you check the tracking logs of exchange server or right click on message and check the header information. Check where it is stucking....do you have any 3rd party spam server.

And if you really want to change it. Do it after business hours always. Any change related to Exchange must be done after business hours.
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Glen KnightCommented:
This question has been classified as abandoned and is being closed as part of the Cleanup Program. See my comment at the end of the question for more details.
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