DOS on exchange server?

Hi,
Im using some VB code (in excel) to mass email list of users...7000 + via a shared exchange mailbox.

I use the redemption tool to get around the damn annoying outlook messages that stops you sending emails on bulk (http://www.dimastr.com/redemption/).

a senior director at my company has asked me if my script could cause a Denial Of Service on the exchange server (or any other problems!?), as im sending so many emails in only a matter of minutes?

Any ideas?
jamiepryerAsked:
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Andres PeralesCommented:
Email gets sent to your exchange servers que, and the que manages the flow of outbound traffic, along with the configuration of your SMTP connector, it is not a 7000 messages all sent at the same time...they get qued first.
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jamiepryerAuthor Commented:
sorry, im still a little confused.... im not an exchange guru...

does that mean they will cause a problem..or not, as its just a load of emails in a queue?
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techzterCommented:
You could possible get your e-mail server flagged but not because of your script. It would depend on the recipients mail servers and the level of threat they have the flag filters set to. If thousands of the users on your list are all within the same company or ISP you may run into issues. Otherwise you should be fine. If you find it creates an issue just contact the site admins and ask them to take your server off of the blacklist. As long as you have your RDNS, and MX Records setup for them to be able to verfiy your mail server is legit than you shouldn't have a problem. Make sure that your outbound message has a way for users to unsubscribe from further mailings.
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techzterCommented:
Oops sorry if I misunderstood your question. Upon reading it again I think that you were more concerned that your own server would think it was an attack.
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Andres PeralesCommented:
They should not cause a problem, from a technical stand point of Exchange, but as techzter mentioned is spam filters and ISP's are using some strict setting then you can be flagged for potential issues.
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jamiepryerAuthor Commented:
thanks for the comments so far :)

this is all going via my internall company exchange servers and to people who are all on my GAL
its not actually going out onto the "web", its all internal, if that helps/makes any difference.

im worried about any problems that could occur at all
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Andres PeralesCommented:
Should be fine!
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techzterCommented:
The only issue I can think of would be the load on the server. Perhaps schedule the script to run in off hours if you can. Otherwise I can't foresee any issues, especially if all of the messages will be internal.
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jamiepryerAuthor Commented:
Thanks for all the advise, i will pass the comments over!
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jamiepryerAuthor Commented:
cheers - split 250 each way lads, hope thats ok
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