email rejected, get lost?

[HollyRidge]

I get the following message from time to time from our helpdesk (the other day I got several of them within a short amount of time)...

From: Support Desk [mailto:supportdesk@domain.com]
Sent: Tuesday, October 10, 2006 10:54 AM
To: Mail Delivery System
Subject: Re: Mail delivery failed: returning message to sender

This email has been removed from helpdesk due to spam. Your email was rejected so you will need to login to our helpdesk to submit a ticket. If you were trying to send us spam... GET LOST!!

For the life of me I can not figure out where this message is being generated from. I am guessing it is from the helpdesk somehow because it shows as coming from our primary email address of our helpdesk and is going to Mailer-Daemon at the server.

I do have a rule set there to delete if the senders email matches Mailer-Daemon of the server.

I also have another rule to delete the senders email of the primary email account of our helpdesk to prevent the looping from spammers forging the spam mails to show the to and from emails as our supportdesk account. That step stopped the looping problem that occured when that happened as well as the load problems associated with it.

Now all of a sudden these emails surfaced about a week or 2 ago. I was running 3.00.90 when these surfaced (& had been for a while) and they have continued even after upgrading to 3.04.10 yesterday.

[Jen]

Setup mail parser rules to 'not send auto responder' with name contains mailer-daemon. Keep play with middle drop down of matches, contains, equal to or first field with senders, name drop down. See if it has stop email rejected.

[HollyRidge]

That didnt work. I am still getting these.