Alerts

[Corbets]

Jamie's been awesome about answering two other posts today, so I figure third time's the charm.

When a user configures an alert, what email address is the alert sent from? With our current configuration, we use a 3rd-party email provider (different from our 3rd-party web hosting provider - don't ask), but the provider only accepts email from a limited number of defined email addresses tied to a specific account.

This works fine in most situations, as long as the staff member doesn't attempt to change the default "From" address in a reply to his or her own account. Unfortunately, it's my suspicion that SupportSuite sends alerts from the staff member's email address, which won't work. Obviously, my alerts are not working at the moment. ;-)

Is this correct? Is there a workaround I could apply?
Thanks!
Lance

Edit: Just got a bounce message in the queue. Here it is - I think it confirms my suspicions, but after a 15 hour day today, I'm no longer certain. ;-) Things in parenthesis have been replaced with descriptors for privacy reasons.

Reporting-MTA: dns; (MTA of the ISP that hosts mail)
Received-From-MTA: DNS; (MTA of ISP hosting the SupportSuite installation)
Arrival-Date: Tue, 11 Dec 2007 20:57:12 +0100 (CET)

Final-Recipient: RFC822; (MY.EMAIL.ADDRESS)
Action: failed
Status: 5.1.1
Remote-MTA: DNS; (MTA for our company to receive the mail)
Diagnostic-Code: SMTP; 550 Unrouteable address
Last-Attempt-Date: Tue, 11 Dec 2007 20:57:19 +0100 (CET)