We've just recently deployed a bunch of new MFP printers to all of our office locations and a print server is at each location as well. I wasn't involved with this deployment so to my knowledge, the print servers are in place to monitor the MFP units for supplies as well as print jobs, I don't believe the print server controls any of the scan to email functionality.
Our technicians had the units set up and working properly where the end user could scan a document and it would go immediately to their email with the document attached in PDF format.
A couple months ago, we set up a Smarthost connector on our Exchange servers so that our spam filter is monitoring outgoing email as well as incoming. Since then, the MFP scan to email functionality has quit working.
At our main office, all the MFP scanners are working but the technicians tell me, none of them are hooked to the print server. I worked with the technician at one of our other sites and it seemed every time we made a change in the settings on the MFP, the scan to email function would work - ONCE then not again. We even changed the IIS settings on the print server (SMTP Email category) and again, the functionality was there - ONCE but not again.
We've tried using the server name, server IP, SMTP connector IP but we can't get it to work more than once. This could also be DNS related but I'm not sure.
I know this question may be pretty site specific but if anyone has come up against anything remotely close to what is described here, your input would be most helpful.