I am missing something...
The Canon unit was sending our scanned documents (via internal SMTP setup) no problem until I swapped in a SonicWall TZ 105 yesterday. Do I need to tell the SonicWall allow SMTP sending from that IP address?
If so, I haven't found any instructions to help me along. These instructions are the opposite of what I'm looking for: https://support.software.dell.com/kb/sw7497
The SMTP is set up within the Canon functionality. Nothing's changed on the scanner/copier.