We have a phone system capable of sending voicemails via SMTP. I have it working through Mercury but the From address coded in the phone system software has an invalid domain. This has caused some messages to be rejected (by gmail so far). The phone system folks want a first born in payment to change the programming so I'm wondering if there is any way that a message submitted to Mercury as From: voicemail@invaliddomain.com can be sent out as From: voicemail@ourdomain.com.
